Hi Bminozzi,
The DX168 inputs and outputs can be used in addition to the SQ’s IO. So you can use up to 48 inputs and 28 outputs with this system and these are freely assignable, so you aren’t limited to how many outputs you can use, only to the amount of mix buses available.
On the SQ, you have 12 configurable mix buses which can be an Aux or Group and mono or stereo. This is in addition to the LR bus, 3 stereo matrix buses and the PAFL.
If you would like further assistance with getting your system set up, please start a ticket at support.allen-heath.com
Thanks!
Alex