Hi @DaveinTN - if you want to hide collections so the different owners can’t see it, follow the advice here (I posted this in your other thread, but you may have missed it):
If you want to do more than this - that is, make the collection entirely inaccessible between owners, then you will have to create a second organization (e.g., the two-person free organization that Kent mentioned). My apologies if I confused “not see” with “not access” collections in your intent.
