1) You can send any of the mixes (1-6, Main L, Main R) to Alt out A or B but do not get a separate overall master volume control of that output; it is tied to the volume of whatever it is getting the signal from (i.e. Say, overall level of Out1)
2) There is a maximum number of users who can be connected to the CQ at any one time using CQ-MixPad and/or CQ4You. I can’t remember what it is but you may exceed it with 8 CQ4You users and a CQ-MixPad user.
3) Even if you send one of the mixes to Alt A or B, it’s still only one mix. So, lets say you are sending Out 1 to both Out1 jack and Alt A, and have two users trying to mess with the mix on Out 1; they will be stepping on each other.
4) You can send one of the mixes to the headphone output, and will have an overall volume control for it, but it’s still one mix (so, again, stepping on each other if trying to make changes in CQ4You).
Since you cannot exceed the six overall mixes, this really comes down to whether more than one person can satisfactorily share a mix. If so, your easiest option will be to let one person control it with CQ4You and just use a headphone amp with individual physical volume controls so that each has control of their overall volume.
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