# Invite people to edit, review, and comment

[Canonical article](https://slides.com/docs/collaboration)

Invite others to review, present, or edit your presentations with you. To invite your first collaborator, select the **Collaborate** icon in the top-right corner of the editor. If the person you invite doesn&#39;t have a Slides account yet, they&#39;ll be prompted to sign up for a free one.

If someone only needs to view the presentation, you can [share the deck by link](/docs/sharing-decks) instead. Private decks can be shared through [revocable private links](/docs/sharing-private-decks) without adding the viewer as a collaborator.

&lt;img src=&quot;https://static.slid.es/help/other/collab-invite.png&quot; alt=&quot;Add a collaborator dialog with email and role fields&quot; width=&quot;2560&quot; height=&quot;774&quot;&gt;

## Permissions

Each collaborator has one of the following roles:

- **Viewer:** can comment.
- **Presenter:** can comment and present.
- **Editor:** can comment, present, and edit the presentation.
- **Admin:** can add and remove collaborators. This role is only available on the Team plan.

To change a collaborator&#39;s role, select their avatar. You can also remove them from the presentation to revoke their access.

&lt;img src=&quot;https://static.slid.es/help/other/collab-edit-user.png&quot; alt=&quot;Collaborator role and removal options&quot; width=&quot;2560&quot; height=&quot;748&quot;&gt;

## Comments

Once you&#39;ve added a collaborator, select the collaboration icon to open the comments panel. Comments are attached to the slide you&#39;re currently viewing, and each comment thread shows which slide it belongs to.

&lt;img src=&quot;https://static.slid.es/help/other/collab-comments.png&quot; alt=&quot;Comments panel open beside a presentation in the editor&quot; width=&quot;2562&quot; height=&quot;1222&quot;&gt;

To edit or delete a comment, hover over it and select the cog icon.

&lt;img src=&quot;https://static.slid.es/help/other/collab-edit-comment.png&quot; alt=&quot;Edit and delete options for a comment&quot; width=&quot;1336&quot; height=&quot;570&quot;&gt;

## Comment notifications

When someone adds a new comment, a notification appears in the top-right corner. Select it to jump directly to the related slide. If there&#39;s activity while a collaborator is offline, Slides emails them a summary of what they missed.

&lt;video src=&quot;https://static.slid.es/help/other/collab-notification.mp4&quot; title=&quot;Notification for a new collaborator comment&quot; width=&quot;2558&quot; height=&quot;1222&quot; preload=&quot;metadata&quot; autoplay muted playsinline loop controls&gt;&lt;/video&gt;

## Collaborator presence

The sidebar lists everyone who has been added to the deck and shows whether they&#39;re online. People viewing the same slide as you are grouped together within a green outline.

&lt;img src=&quot;https://static.slid.es/help/other/collab-user-presence.gif&quot; alt=&quot;Collaborators grouped by the slide they are viewing&quot; width=&quot;1216&quot; height=&quot;742&quot;&gt;

Slides records saved collaborative changes in the [revision history](/docs/revision-history), including who made each revision.

## Review mode

If you aren&#39;t editing, or you don&#39;t have permission to edit, you&#39;ll see a page designed for leaving feedback and discussing the presentation. It works well on mobile devices too, so you can leave feedback on the go.

The top-left corner shows whether anyone is currently editing and which slide they&#39;re on.

&lt;img src=&quot;https://static.slid.es/help/collaboration-shared-editing/collab-review-mode.png&quot; alt=&quot;Presentation review mode with comments&quot; width=&quot;2880&quot; height=&quot;1800&quot;&gt;