Our praise band has different singers and instrumentalists each week. Each week at practice they have to re-setup their mixes (using the SQ4U app). Is there a way to save and recall a single mix in an aux channel?
You would have to save a specific scene for that group of musicians. When you go to save the scene, you can isolate which channels you want to specifically want to save to that scene (i.e. Dave the drummer hits harder than John the drummer, so you save a scene as “Dave on drums” and a different one for “John on Drums”)
The scene should save the Aux Mixes as well, and therefore solve your problem.