You keep mentioning professional level? Why? They are not doing any professional duties .The vast majority of DM's ever certified by PADI are not current. I wonder how there could be such confusion from one of your own shops divemasters as to what was expected. I guess from your lack of reply your shops program is not and was not ever spelled out and simply implied and then interpreted in different ways. I was just interested in the various policies though they don't really matter, When on RTB I fill my own tanks and don't use a shop or boat, You may , however, want to look into setting the policy in writing for the future so as to avoid any further confusion.
It is in our terms and conditions. Now you want to define the meaning of "professional level" within the dive industry?