Regulation for calling "at ease" or "attention" in chapel

You might check with CH (MAJ) William Beaver or one of our other Chaplains, however my understanding was that it was the "Chaplains" workspace, and as such generally protocol is suspended in the the main chapel itself.

Pragmatically, it doesn't make sense to call attention while conducting services, etc. On occasions where attention would be called, the Chaplain would do it as he is the senior officer on deck.

However, acknowledging the officer or NCO with the greeting of the day in quiet tones would not be inappropriate, if you are not interrupting them (or them you) from anything else.

There are times when the chapel is used for other than religious purposes. i.e. we held commander's call in the chapel. Then it is appropriate, but, I don't think it is otherwise.

The chapel is a neutral location and most military formalities are not observed