You can share a registered array with any other user on TileDB Cloud. Currently, you can specify array-wide policies, such as read, write and read/write. We plan to add finer-grained access policies soon. To share an array, find it on Assets -> Arrays and either click on the sharing button located on the right end of the array card in the list, or click on the array card and navigate to the Sharing tab. The added member will appear in the array members list, where you will be able to change the access policy or revoke access from the user. Users get notified by email when someone shares an array with them.