Recording a live band onto Behringer Wing?

Hi guys,

I'm hoping somebody can at least link me a helpful tutorial. My objective is to do a live recording of a band while simultaneously having processed audio output through the main PA.

I work with an actively-gigging band that brings their own Behringer Wing and an iPad for the compatible Mixing Station app. I'm usually only with them when they have a live show, so the live audio is priority and I have a good handle on the live mix. I also see that the board has capability to record to an SD card. I'm wondering how I can set that up. I see there's a menu for Alt Routing but I'm not sure how to use it. The guitarist has brought a separate iPad to record directly to Logic Pro before via USB but that didn't seem to work, so we'll likely to have use an actual laptop.

Appreciate any insight on this!