A group that is part of a national group cannot defy the rules of the national group. The smaller group can only make rules that don’t conflict with the national rules.
The alternative is to get out of the national organization. Isn’t that what the Mormons are doing?
Is there anything terrible about a group of boys interested in nature, etc., that isn’t part of the Boy Scouts of America?
That's not what we're talking about here, though, is it?