How the Accesses Work
Users who own objects can share them with other users.
When an item is created, such as a Bookmark Root, the app uses the credentials and other rules to define who owns the item. The owner could be a person, an organization, or a collaborative space. Person A could be considered an owner of an item that was actually created by Person B because the app considers the collaborative space or the organization as the owner. If Person B adds Person A to an item using this page, Person A has all accesses of an owner, plus the specific access defined on this page.
When two users have the same credentials (role, organization, and collaborative space), those users have the same access to objects, including modify and delete, regardless of which user owns the object. If you add a user to the Multiple Ownership Access page for an object with reduced access (such as Read), that does not override the access granted by the credentials.
If you access an object but do not see your name in the list on the Sharing page, it could be because your access is inherited from another object that you do not have access to. For example, if your access to a Document is inherited from an inactive Bookmark Root, you can still access the Document (by searching for it), even though you cannot access the Bookmark Root. Because you cannot access the Bookmark Root, you do not show in the list on the Sharing page, even though you do have access to the Document.