The best suggestion I can give.
Roberts’s rules.
As far as the board structure.
Need to have a chair person. One person
This chairperson waives all rights to vote except in the case of a tie vote, the chair is there to preside over meetings and ensure that they run smoothly. The chair person (if we decide to use Roberts rule) would have to have working knowledge of said rules.
And a small group as the board. Usually 6-8 members.
Usually each group/team/unit has one representative and one second.
If the primary is attending along with his second then the second would defer to the primary for all voting.
If we are to structure this properly.
I would suggest.
Chairperson.
Team reps.
Keeper of the notes.
Then later if this grows.
Add in regional reps as need be.
To answer questions I noticed in posts
Yes everyone have a voice and can attend meetings. But! Before the open floor all members typically refrain from interrupting the flow of the meeting. Anything that needs to be added during the main body of the meeting should go thru your teams rep. this keeps the idle chatter down during the meeting.
Typically meetings are only held on regularly scheduled times. But if sufficient members request a meeting one can happen as need be. These meetings are for emergencies only and would have a slightly different structure, whereas only some things could happen. But the abilities of such meetings are usually voted on and ratified before hand so I will not guess as to what the membership of mag would want to allow at any such meetings.
And lastly in order to call said emergency meeting a voted upon number/percentage of reps would have to call for a meeting. This is so meetings don’t happen without a majority of reps being present. what I have seen in the past we would have to have at least 60% (majority) of reps+chair in order to call a regular meeting, then 75% to call an unscheduled meeting with at least 24-hr notice before the meeting.
Things that would need to happen.
Present idea to function as a board to the M.A.G. membership.
Vote on rules for such meetings (Roberts’s rules)
Find members of the board.
Start the Meetings
Tiny- :0) no everyone has a voice and can attend the meetings

But in a board structure it has a flow
Chair calls meeting - formal section
Review minutes from last meeting
Old business
New business
End formal section of meeting
Open floor - informal section
During the formal section all non rep members do not interrupt the meeting with any chatter.
To reason for this is that the topics and other things going to be discussed as posted long before. It is the membership whom should contact their reps with their opinion on matters to be voted on so that the rep can vote as their team would want.
But! During the informal section anyone may say what they would like, after being recognized by the chair.
Hope that answers your questions tiny!