Documentation shows back in October of 2017, selectmen received from the Collins institute a document with it's opinion concerning Templeton by-laws specifically on the Advisory Committee.
It was on the subject line of Roles and responsibilities of Advisory Committee.

Selectmen went on to propose multiple changes to Town by-laws regarding the Advisory Committee, without having any discussion with the committee, including withholding this document from the Collins institute.

One interesting item included was the institute stating they were aware of only one other town where Advisory Committee can appoint it's own members if a vacancy occurs during the year. A search with a timeline of about 5 minutes showed this to be not true and there are probably other towns where this is done as well. Great to see transparency and this so called working together thing often coming from the selectmen.