Intro to collaboration in Numbers for iCloud
You can collaborate with others in real time by sharing a link to your Numbers for iCloud spreadsheet. Shared spreadsheets and any changes to them are saved in iCloud, and people working in the spreadsheet see the changes as they’re made.
As the owner of the spreadsheet, you control who has access to it, and what they can do:
Spreadsheet access: You can send a link that anyone can use to open the spreadsheet. Or, you can invite specific people who must sign in to iCloud with their Apple ID to open the spreadsheet.
Editing permission: You can choose whether others can make changes to the spreadsheet, or only view it.
If you set access to allow anyone with the link access to open your spreadsheet, they don’t need an iCloud account or Apple ID to view or edit the shared spreadsheet.
If you invite only specific people to collaborate on your spreadsheet, they must be signed in to iCloud to view or edit the spreadsheet. 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 spreadsheet, people you share with need any of the following:
A Mac or Windows computer with a supported browser.
A Mac with macOS High Sierra 10.14 or later and Numbers 6.2 or later. They must also be signed in to iCloud and have iCloud Drive turned on.
An iOS device with iOS 12 or later or iPadOS and Numbers 5.2 or later. They must also be signed in to iCloud and have iCloud Drive turned on.
Anyone using an Android device, or an iOS device without iOS 12 or later or iPadOS and Numbers 5.2 or later, can view, but not edit, the spreadsheet.
Note: If your spreadsheet 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.