I am trying to make a c4 wakeup to start up at 730, do a few actions then turn off at 845. With the scheduler, I have it set to reapeat every day except sunday, because the person it is for owns a business. Is there any way you can set it to repeat every week like that but exclude certain days (holidays, etc.)?

Not as far as I am aware, C4 doesn't know or recognize holidays. What I did is program a button in the Master Bedroom to toggle the wake up scene on or off. I also have the led change color so that I know whether the wake up will come on or stay off. It's exactly for those days when I either don't go into work or for those weekday holidays. Works like a charm for my wife and I!