I do it while I'm making a pizza or something. Nobody really notices if I drop off for a few minutes to go take it out of the oven.

Hell, with Praetorium, I can put a pizza in the oven at the beginning, have it done by the fight with Nero, take it out and set it to cool while he's talking about his hateboner for Cid, go back to cut it up while Gaius is talking on the elevator, and eat most of it during Lahabrea's speeches. Even if I'm a little off on timing, the gear scaling is so out of hand that it doesn't really matter if one person is absent for a minute or two.