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Office Suite: Collaboration, Comments, and Version History

Author: Sophia

what's covered
In the previous lesson, you learned how to create, save, and organize documents effectively. In this lesson, you will learn how office tools support collaboration through comments, real-time editing, and version history. Specifically, this lesson will cover:

Table of Contents

before you start
Think about a time you shared a document or worked on a group project. Was it confusing to track edits or final versions? Modern office tools solve this with built-in features for smooth, real-time collaboration.

1. Modes of Collaboration

In this lesson, we will talk about sharing documents and collaborating online. While the norm was once emailing files back and forth, the norm now is to have a single file that all collaborators can access.

There are three basic modes that users can use when they are collaborating online. When the creator of the document shares the file they can decide what level of access each collaborator should have.

In both the desktop app and Word for the web, you can check or change your mode from the Mode menu in the upper-right corner of the window. The image below compares the menu options in each version, along with what each allows you to do.

Side-by-side view of the Mode menu in Word Desktop and Word for the web, showing three options: Editing, Reviewing, and Viewing, each with brief descriptions of their permissions.

  • Editing: This is the default mode for the document creator, and anyone who will write new content, format the document, or otherwise need a high level of access. Editors can change their mode to reviewing or viewing.
  • Reviewing: In this mode, users can leave comments to make suggestions; they can also make edits directly to the document but only with track changes enabled. Reviewers can change their mode to viewing only.
  • Viewing: In this mode, users can only read the document. They cannot leave comments, make any changes, or change their mode.

2. Adding Comments and Suggestions

When working on a shared document, you may want to offer feedback or edits without changing the text directly. Most office tools support this through two features: comments and suggestions.

The table below explains these features.

Tool What It Is Typical Steps (Google Docs/Microsoft Word Online) Where It Appears Effect on Document When to Use It
Comment A note linked to specific text that gives feedback without changing the original content
  1. Highlight the text.
  2. Right-click and select “Comment” or use the Insert menu to choose “Comment.”
  3. Type your note.
  4. Click “Comment” to post it.
In the margin or sidebar Text stays the same. For asking questions, making reminders, or general feedback
Suggestion A proposed edit that appears in-line, which the author can accept or reject
  1. Switch to Suggesting mode or Reviewing mode.
  2. Type your changes.
  3. Suggestions appear in color with a comment box.
  4. Others review the edit.
In-line with document text Shows proposed changes without editing the final text. For rewording, fixing, or improving specific sentences

try it
Open a shared document in Google Docs or Microsoft Word Online. Then, follow the steps below to practice both collaboration tools:

1. Add a comment.
  • Highlight a sentence.
  • Click the comment icon or choose Add Comment.
  • Type: “Should we give an example here?” and post the comment.
2. Make a suggestion.
  • Switch to Suggesting mode (in Google Docs) or Reviewing mode (in Word Online).
  • Reword a sentence in the document.
  • Notice how your edit appears as a suggestion, not a direct change.

After addressing comments, resolve them to keep the document clean while preserving a record in the comment history.

Steps to resolve a comment:

  • Click on the comment in the margin.
  • Review the comment and ensure that the feedback has been addressed.
  • Click the “Resolve” button (usually, a check mark icon).
The comment will disappear but remain in the comment history, which keeps all past comments.

watch
Take a look at this short video to learn how to add and resolve comments in Word for the web. Google Docs works the same way and looks very similar.

terms to know
Comments
Notes attached to specific text that provide feedback or ask questions without changing the original content.
Suggestions
Proposed changes to text that can be accepted or rejected by the document owner.
Resolve
The action of marking a comment as complete or no longer needing attention.
Comment History
A record of all comments in a document, including those that have been resolved.


3. Tracking Changes and Resolving Feedback

When multiple people edit a shared document, it is important to track who changed what. The Track Changes feature highlights all edits—like added or deleted text—without changing the original content right away. This keeps the process clear and lets everyone review and approve changes before they are finalized.

The table below explains how tracked edits appear in a document.

Change Type How It Appears Example
Added text Shown in color (such as blue or green) Please find your invoice of January 14, 2025 attached.
Deleted text Appears crossed out or with a strike-through Please remit payment immediately.
Edits by different people Color-coded and labeled changes by each person This account is now six months past due. As such, we cannot process further orders until your account is paid in full.

EXAMPLE

When Shyama added a sentence to the team report, it appeared in blue text, while Minho’s deleted phrase showed up with a red strike-through and a comment bubble in the margin.

The Review tab in Microsoft Word displays all the tools needed to track, review, and manage edits, such as turning on Track Changes and accepting or rejecting suggestions.

To use Track Changes, you will need to turn it on in your application. While the tools may use different names, the goal is the same: to help you propose edits without altering the original version.

In the screenshot below, Track Changes is turned on, and the Tracking group is expanded to show tools for navigating, accepting, or rejecting edits. Markups appear directly in the document.

Microsoft Word interface with the Review tab open, showing “Track Changes,” “Accept,” and “Reject” buttons in the ribbon, and sample edits in the document highlighted.

The table below shows how to turn on Track Changes in Microsoft Word and Google Docs.

Tool How to Turn It On
Microsoft Word Go to the Review tab and click Track Changes. This tracks all edits as you type.
Google Docs Click the Editing drop-down menu in the top-right corner and choose Suggesting mode. This marks edits for review.

Once edits are tracked, the next step is to resolve them. In this case, resolving means reviewing each change and choosing whether to accept or reject it. This is different from resolving a comment, which simply hides the conversation.

EXAMPLE

A team lead reviews tracked changes in a report and accepts the final edits before submission.

The table below outlines the actions you can take when reviewing changes.

Action What It Does
Accept Keeps the change and applies it to the document
Reject Removes the change and keeps the original version
Review step-by-step Lets you view and make decisions regarding each change one at a time
Accept/Reject All Applies or removes all changes at once (use with caution)
Use the Review Pane Shows a list of all edits and comments for easier navigation

try it
Turn on Track Changes in Word or Suggesting mode in Google Docs, make a few edits, then use the Accept and Reject options to review each change step by step and explore the Review Pane to see a full list of edits.

Tracking and resolving changes helps ensure accuracy, encourages collaboration, and gives everyone a voice, without losing control over the document’s final version.

big idea
Tracking changes makes it easy to see, review, and manage edits in shared documents. It supports clear communication and thoughtful collaboration, without losing any original content.

terms to know
Track Changes
A feature that records and visually displays all edits made to a document, including insertions, deletions, and formatting changes.
Review Pane
A panel that displays all tracked changes and comments in a list format for systematic review.


4. Viewing and Restoring Previous Versions

When collaborating on a shared document, it is easy to make changes you later want to undo. Version history acts like a rewind button, giving you a clear timeline of your document’s development.

Version history lets you do the following:

  • Save snapshots, which are full copies of your document at different times, showing exactly how it looked (including text, layout, and edits)
  • See how your document has changed from one version to another
  • Identify who made each change and when
  • Restore an earlier version if needed, without losing your current work

EXAMPLE

After deleting a section by mistake, Kai used version history to restore an earlier version of the document and recovered everything.

Many cloud-based tools automatically create versions for you—you do not have to click “Save As” or rename files manually. The process of saving and accessing the version history can vary slightly between tools.

The table below shows how version history works in two common platforms.

Tool How It Saves Versions How to View or Restore
Google Docs Saves a version every few minutes during active editing Click File → Version history → See version history
Microsoft Word Online Automatically saves versions based on editing activity, time intervals, and collaboration patterns Click File → Info → Version History

The screenshot below shows Google Docs’ version history, where you can select a time stamp and click “Restore this version” to revert changes.

Google Docs version history panel showing a list of time stamps, editors’ names, and a “Restore this version” button for the selected entry.

try it
Open a document in Google Docs or Microsoft Word Online. Make a few edits, then access the version history to view past versions and see what changes were saved.

Both platforms also display the date, time, and editor name for each version. You can preview older versions, compare them side by side, or choose to restore an earlier one.

Restoring will replace your current version, so it is often best to make a copy first if you want to retain the most recent changes.

big idea
Version history adds another layer of protection to collaborative documents. It allows your team to confidently make changes, knowing there is always a way to revisit, compare, or restore previous work.

terms to know
Version History
A chronological record of all saved states of a document, allowing users to view and restore previous versions.
Snapshots
Saved states of a document, each captured at a specific point in time.
Restore
The action of replacing the current document with a selected previous version.


5. Working Together Live in a Document

In the tutorial Collaboration and “the Cloud,” you were introduced to real-time coediting, which lets multiple people work on a document in the cloud at the same time. Now, you will learn how to use those tools in practice.

Live collaboration speeds up teamwork by letting everyone edit the same document instantly. It helps collaborators work smoothly, know who is in the file, coordinate edits, and use the built-in chat or comments.

term to know
Live Collaboration
Working in a document at the same time as others, with updates happening instantly.

5a. Working in the Same Document at the Same Time

When you open a shared document in a cloud tool like Google Docs or Microsoft Word Online, you might notice small profile pictures or initials at the top. These are called presence indicators—they show who else is currently viewing or editing the file.

EXAMPLE

While working in Google Docs, Idris saw a teammate’s profile picture in the top-right corner—indicating someone else was editing the file.

You can also see others typing in real time, with each person’s edits shown in a different color and labeled with their name. This helps avoid overlap and keeps things clear.

The flowchart below outlines the four key steps for live collaboration in a shared document.

Flowchart showing how to collaborate in real time: open the shared document, see who is editing, watch changes as they happen, and coordinate work to avoid overlap.

try it
Open a shared document with a peer in Google Docs or Microsoft Word Online.

  • Check the top-right corner to spot presence indicators (initials or profile pictures).
  • Ask your peer to type in one section while you type in another—observe how their changes appear instantly.
  • Take turns editing the same sentence to see how each person’s changes are labeled.

term to know
Presence Indicators
Icons or names that show who else is currently in the document.

5b. Communicating Through the Built-In Chat

In addition to typing together, many cloud platforms include a document chat feature. This allows you to send quick messages inside the file without switching to email or another app.

The chat usually appears in a sidebar—a panel on the side of the document window that also contains tools like comments, tasks, or version history. Unlike comments (which attach to specific text), the chat is used for more general messages like “I’m almost done with Page 2.”

The table below explains how to use the chat feature during live collaboration.

Action What to Do
Open the chat panel. In Google Docs, click the chat icon in the top-right corner (available only when others are present). In Microsoft 365, use linked comment threads within the document or open Teams separately for chat communication.
Send quick messages. Use the chat to give updates like “I’ll take the conclusion” or ask questions like “Ready to review now?”
Keep the chat focused. Use it for general coordination. Use comments if your message relates to specific text.

The screenshot below shows the chat sidebar in Google Docs, where collaborators can exchange quick messages during live editing, such as updates or coordination notes.

Google Docs chat sidebar showing a conversation between collaborators with time stamps.

terms to know
Document Chat
A real-time messaging feature within collaborative documents that enables team communication.
Sidebar
A panel that appears alongside document content, typically containing a chat, comments, or other collaboration tools.


6. Assigning Tasks Within Documents

In shared documents, you can assign tasks to teammates without leaving the file. This keeps everyone clear on what needs to be done and where.

A task is a small job linked to part of the document—like reviewing a sentence or adding a missing detail. You can assign it to someone, set a deadline, and track progress—all inside the document.

The flowchart below shows the steps to assign a task in a shared document.

Flowchart showing how to assign a task: Select text, add a comment, tag a person, mark it as a task, and send.

The screenshot below shows the task assignment feature in Google Docs, where you can choose a teammate, set a due date, and assign a comment as a task directly in the document.

Google Docs task assignment pop-up showing a selected user, drop-down list of teammates, and due date field.

try it
Open a Google Doc.
  • Type two short sentences.
  • Highlight the second sentence.
  • Add a comment and type @YourName.
  • Check the box that says “Assign to [YourName].”
  • Click “Assign.”
Note: Word Online uses regular comments for task coordination but does not have dedicated task assignment features.

term to know
Tasks
Small jobs or responsibilities linked to part of a document.

summary
In this lesson, you learned how to collaborate efficiently in shared documents.

You learned about different modes of collaboration and how to choose the right level of access for each participant in a shared document.

You looked at adding comments and suggestions, tracking changes and resolving feedback, and viewing and restoring previous versions.

You also explored working together live in a document, including working in the same document at the same time and communicating through the built-in chat.

Finally, you saw how to stay organized by assigning tasks within documents to specific teammates.

In the next lesson, you will learn how to format text—adjusting font, size, and emphasis to make your documents clear and professional.

Source: THIS TUTORIAL HAS BEEN ADAPTED FROM OPENSTAX’S “WORKPLACE SOFTWARE AND SKILLS.” ACCESS FOR FREE AT OPENSTAX.ORG/DETAILS/BOOKS/WORKPLACE-SOFTWARE-SKILLS. LICENSE: LICENSE: CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL.

Terms to Know
Comment History

A record of all comments in a document, including those that have been resolved.

Comments

Notes attached to specific text that provide feedback or ask questions without changing the original content.

Document Chat

A real-time messaging feature within collaborative documents that enables team communication.

Live Collaboration

Working in a document at the same time as others, with updates happening instantly.

Presence Indicators

Icons or names that show who else is currently in the document.

Resolve

The action of marking a comment as complete or no longer needing attention.

Restore

The action of replacing the current document with a selected previous version.

Review Pane

A panel that displays all tracked changes and comments in a list format for systematic review.

Sidebar

A panel that appears alongside document content, typically containing a chat, comments, or other collaboration tools.

Snapshot

The saved state of a document at a specific point in time.

Suggestions

Proposed changes to text that can be accepted or rejected by the document owner.

Tasks

Small jobs or responsibilities linked to part of a document.

Track Changes

A feature that records and visually displays all edits made to a document, including insertions, deletions, and formatting changes.

Version History

A chronological record of all saved states of a document, allowing users to view and restore previous versions.