When you uploaded or created a file, you became the Owner user of the file. Actions on a document, such as 'Move To', 'Rename', 'Edit tags' and 'Delete' are not available to non-Owner users. The only exception is the Project Lead user (the Owner of the project), who has all the actions on all documents. In our example, the Project Lead of 'Example Project' is John Smith. You can view the Project Lead in the Project 'Summary', or in Project Settings – Edit – Owner.
These are the actions available to the Owner of the file:
These are the actions available to non-Owners:
These are the actions available to the Project Lead: