title: Allow script to run as admin to update spreadsheet
body: <p>I have a spreadsheet that is shared with some other users. Many of the cell are range protected. However, through a menu I allow a user to run a script (which access an external library therefore invisible and not in the control of the user) that will modify some of the protected ranges. However, the script throws that there is no permission to perform this operation.</p>
  
  <p>Is there any option to have this library run with library 'admin' rights so it doesn't throws due to protection?</p>
  
  <p>Thx!</p>