The 15 league presidents make up the ACC Board of Directors and they choose the Commissioner. It is a regular job so there is no term limit so the Commish serves as long as the BOD wants him/her in the position.
The commissioner is typically has experience as an AD, college president, lawyer or media executive.
Circus Clown evidently…🤡 At least he is not to blame for the current state of affairs in the ACC—— thx Tarheel Swoffy. I will never understand how he allowed this ridiculous mess to happen.