Regarding Pitcairn.
So no names for anyone even at this late date. I can't even remember where the Transporter Chief is referred to as Pitcairn in the final productiuon right off.
Sir Rhosis
Memory Alpha and IMDB call him Pitcairn. Don't know what their source is.
Early drafts had him as Pitcairn-memos from Kellem Deforrest research back up the Bounty connection.

it's hard to see in the pic but I think 4 eyes finished with his calculations and then closed the book and set his glasses on top of the closed binder. It was quite common for navigators and pilots to do calculations before making course corrections, etc. and since Roddenberry, Matt Jeffries, and the rest of the production team had military backgrounds this would have been seen as a normal piece of business back then...