How can I delegate Google Apps access from one G account to another?
It's possible with Google Calendar, but I haven't found a way to do it with Google Apps. I especially want it for documents and sheets.
Unfortunately, you cannot delegate access to anything in Google Drive, as you would Gmail or Calendar.
The closest thing the 'manager' could do is create a folder and give the 'assistant' edit access to the folder. Everything within the folder should inherit the permissions of the folder and the 'assistant' can manage the 'manager's' docs.