You can convert the four stereo groups to be be stereo aux mixes.
The option is in the groups set up menu.
That said the SB and QuPac for that matter does not have direct group outs.
You would need to use a stage box connected to the mixer to access all the extra outputs.
It’s such a pity, there is a mixer with 14 outs but cannot do 6 stereo in ear mixes. We’ll have to go with a different manufacturer because the SQ range, which is the only AH product to do that, of a QU_SB plus another stage box, is out of our price league.