We had a sister once have a picnic where she left the invitation open to all from the congregation. One of the "friends" heard and was telling everyone and anyone she knew that we were having a congregation picnic. The Sunday before the picnic, 2 elders took the sister organizing the picnic into the back room. I was/is very close to that sister and she explained that the elders told her she could be reproved for brazen conduct if she didn't cancel the picnic asap. The reason? She is a sister and was organizing it without the brothers direction! She tried to explain that it wasn't a 'congregation' picnic, just an open invitation to come to the park, bring your own food type of thing. But nooooo. The brothers need to be in charge, she was a Jezabel (yes they called her that!)
By the way....it was a great picnic! She was also publicly reproved 2 weeks later. There was also a local needs part on being 'submissive to the brothers even if it doesn't make sense at the time' talk.