private section for Master sharing

[ingram]

you should form some initial core of 3-4 users which would be founding members for new section
initial core should coopt new members by voting (by unanimous decision or by simple majority) for every new candidate
this would grant some level of confidence among members of this new section and possibly this scheme (with initial members + voting for every new) is the only way how entire master sharing section could work
even more, we can have more than one such section on board with different members in each branch