No. You don't pause the game to change presets. You change them on your characters's turn.
Honest question: what makes some of you think that just doing something "in your turn" should not count as a time sink?
As I already said previously, the idea of having to "script" a series of possible reactions every time I'm playing my turn when most of that work may even turn out to be completely useless to ME sounds way, WAY more boring and time consuming that just being stopped with a confirmation prompt at the right time WHEN needed.