Protocol tips please!!

[Pearlgem]

I honestly think your Master is the best person to make it clear to you what forms of address he wants you to use. He should be able to tell you clearly and directly how he wants you to address him and help you with examples of other 'speech patterns' he requires - even having practice sessions with you with examples of disliked speech eg a 'passive-aggressive order', and what would he would prefer. (I'm not sure I would know what that meant exactly unless I heard actual examples.) Of course, you'd pick up the principles of what he wants rather than learn each and every example.
It's hardly fair if you've to alter something you have small knowledge or awareness of unless he is tasking you to find out, but even then you are bound to make mistakes as you learn. Ask him very specifically what he requires of you, and focus your energies on that.