Sorry, I used the term "supposed to" incorrectly. I couldn't agree more and I certainly do not "break any standards"! What I meant was hints on buoyancy, hints on alternate methods to clear masks, hints on what I observe with inflator hose utilization that the instructor doesn't necessarily notice because he/she is working with all the students and I can stand back in my appointed position and observe others while instructor is working with individuals. So no, NEVER break standards! But can advise on breathing as it correlates to buoyancy, etc. I'm not surre I sid anything about "breaking standards."
Are you carrying your own liability insurance or are you on the shop's plan? If you are on the shop plan keep in mind that your own personal financial assets are left to the whims of what that policy covers in the event of an accident. Something to consider. When I DMed I ALWAYS carried my own insurance. I did not want my own assets to be protected by a policy I did not have control over.