I'm still setting up my online shop and just received the free card reader for my iPad. I installed the POS but there are virtually no settings at all.
My main store is online but I want to use the card reader/POS app with iPad but only for specific items that I would have with me at the time. I was thinking I could set up a collection for the specific products I'd have with me when I'm doing an in person sale but I can't see how to do this, it just shows all products.
That's what these forums are for, I'm glad you asked.
POS syncs all product changes at regular intervals, you should see the products and collections change very shortly after saving changes in your Admin.