Hi Anthony - thanks so much for taking the time to send this comprehensive response. I'll offer all I can.
I found the Multitrack option - I was using info from these pages that seemed to imply I go into the added song itself, then the settings, but of course it is in the Songs list, hit +, then add new multitrack. So I'm all good on that now, thanks.
Signal paths:
We run a splitter which the venue run all their inputs into, then they take their feeds from the splitter into their stage box/FOH (call it Split 1), and we take the other split (Split 2) into our Soundcraft Ui24r which is our dedicated IEM desk. This way FOH only need to worry about FOH, and we have complete control over our individual IEM mixes.
Currently the SPD-SX send L&R out to FOH (via splitter), and a mono Sub channel (for the click) straight out of SPD-SX to IEM desk.
So we need StageTraxx, via the ipad, to be able to send the stereo tracks to our splitter (which then supplies FOH and our desk), and the Click straigt to IEM desk (effectively 3 outs). How is this accomplished on Stage Traxx please? I can't think I'm the only one who needs to do this but I might be the only one who doesn't know how to... 🙂
It's also just hit me that I need to be able to send midi signals to an external (windows) laptop, which triggers synched video playback (or use video which is on the iPad is fine too) - so that'll need an additional output to HDMI too - any suggestions welcome
Thanks
Scott