around 2018 i visited a random bar on outskirts of a city with a friend. we wanted to enter and a man who opened the door asked "are u a member?" - "no" - "u can only enter if u r a member. it's only $10." - we paid $10 each to have an $8 drink, and laughed about this story for the next few years. now i c what may have been going on. 

zapsammy

Stacker Saloon

saloon

i don't, but it's simple.
a PMA can be set anyhow, the founder makes the rules, the members accept them. any member or founder can have a fiduciary duty to a beneficiary, just like any other business or company, are all trusts, and it does not have to be written the word *trust* anywhere