Intro to collaboration in Keynote for iCloud
You can collaborate with others in real time by sharing a link to your Keynote for iCloud presentation. Shared presentations and any changes to them are saved in iCloud, and people working in the presentation see the changes as they’re made.
As the owner of the presentation, you control who can open it, and what they can do:
Presentation access: You can send a link that anyone can use to open the presentation. Or, you can invite specific people who must sign in with their Apple ID to open the presentation.
Editing permission: You can choose whether others can make changes to the presentation or only view it.
iCloud requirements
If you set access to allow anyone with the link to open your presentation, they don’t need an iCloud account or Apple ID to view or edit the shared presentation.
If you invite only specific people to collaborate on your presentation, they must be signed in with their Apple ID and have iCloud Drive turned on to view or edit the presentation. If you invite someone using an email address or phone number that isn’t associated with their Apple ID, they won’t be able to accept the invitation until they add the email address or phone number to their Apple ID. See Accept an invitation to collaborate.
Minimum system requirements
To view or edit a shared presentation, people you share with need any of the following:
A Mac with macOS Mojave 10.14 or later and Keynote 10.1 or later
An iPhone with iOS 12 or later and Keynote 10.1 or later
An iPad with iOS 12, iPadOS 13, or later and Keynote 10.1 or later
A Mac or Windows computer with a supported browser
On an Android device, or a device without iOS 12, iPadOS 13, or later and Keynote 10.1 or later, people can view, but not edit, the presentation.
In Keynote for iCloud, you can invite others to collaborate on individual presentations. To share multiple presentations at the same time, use the folder sharing feature in macOS Catalina 10.15.4, iOS 13.4, or iPadOS 13.4, or later. To learn more, see the macOS User Guide, iPhone User Guide, or iPad User Guide.
Note: If your presentation is stored in Box instead of iCloud, you can still collaborate using the collaboration controls in Box. See the Apple Support article on using iWork with Box.