Looking at other words in this entry (below), and comparing the letter e as it appears in Gabriel, Ferry and weaver (twice), these all have a small loop at the top. I see the word very clearly as Meeting, and not Mooting.
Clark of the Meeting might indeed have been his occupation, the 'meeting' being equivalent to the 'congregation'. I should imagine that he was employed by the Queen Street Meeting-House as its clerk, rather like a parish clerk at an Anglican church. Perhaps he would not necessarily have been a worshipping member of the congregation?