I do it much like Burg11941 above, bringing the band mix in on the FX return, where I also drop an LA Studio Comp and a Simple EQ into that path to tweek the sound and level of the band mix - but from there I rout the band mix to a dead end (Digital Output) so that it does not appear on the 1/4" or XLR outs but will still be present on the Headphone out (Multi), where it goes to my ears. This way I can get either mono or stereo band mix (using 1 or 2 Returns), and FOH can receive either 1/4" or XLR in mono or stereo with me being able to adjust the overall level of the FOH send (Volume knob) and my IEM level (Headphone knob).
The bottom-row split is where I bring in the band mix (sent to Digital while my guitar path is sent to Multi). This is a rearrangement of the ISS Flyby patch to bring in the band mix.