He obtained a locum tenens, and gave up the time to pilot me round.
He was acting as locum tenens for a friend who was enjoying his holiday abroad.
And the fact that you are a locum tenens doesn't, I think, alter the situation.
But his locum tenens did not possess a copy and had no right to demand one.
Also, the locum tenens at Fulcombe no doubt runs the parish as well as ...