Permissions
The roster
Section titled “The roster”Each diagram has a roster of people and the permission each one holds.
Levels
Section titled “Levels”View, comment and edit. A share link grants a level; a person on the roster holds one directly, and the more permissive of the two applies.
Inheritance
Section titled “Inheritance”Permissions attach to the diagram, not to the room, so a link revoked mid-session takes effect without disturbing anyone whose access came from the roster.