..."so there should be extended a courtesy to all in attendance prior to the beginning the meetings that A-B-C religious affiliation wishes to pray/ask for guidance from their GOD, god, etc..."

Why?   This is a business meeting, not a church meeting.   Time is short enough without turning important planning sessions into church free-for-alls yammering to their invisible friends.    If people want to pray to their god/s they can do so before coming.   The separation of church and state is about government neutrality regarding religion.   If you give precedent to one, you must also give it to the thousands of other religious delusions people have adopted.  This becomes a huge problem when there's not enough real estate for monuments nor time for superstitious utterance.