case 10.5.1 Sit C

Actually it is 10-4-4 under NCAA rules, and they allow a lot more leeway than the Fed.

NCAA 10-4-4d
A coach, team member or team attendant may leave the bench area at any time to point out a scoring or timing mistake, or to request a timeout to ascertain whether a correctable error needs to be rectified.


NCAA 10-4-4e
A coach or team attendant may leave the bench area to seek information from the official scorer or official timer during a timeout or an intermission.