Well…That was easy.
So, my question was “How do I put my hub in exclusion mode?” What I really was trying to do was to delete a Kwikset deadbolt from my devices. The options available from Samsung did not work even though I had several kind contributors on this forum try to help me get rid of it. The solution was to use the API Browser+ (see the link higher in this thread) and I was able to rip that sucker right off of my device list! I have several other dead devices on my system that I can’t wait to remove.