Theyre straightforward.

You need to remove the lower mount to replace the AC belt...not difficult. There is a tensioner pulley that you loosen from the front right below the power steering...a 10mm bolt in a 12mm nut I believe. Loosen that, remove mount, remove belt, replace belt, tighten tensioner.

PS Belt is 2 12mm if I remember right, and a wingnut. Loosen bolts & wingnut, drop the unit, remove belt, replace belt, bring back up and tighten.