In Charedi communties they enforce community standards, they have signs posted on the walls of the latest Chumra
Everything is community controlled so if you stray, they will kick you out of shul and kick your kids out of Yeshiva
In the more modern communities, it doesnt work this way, the yeshivas and Shuls are independent of each other and cannot enforce rules.
The Charedi Shuls and yeshivas are generally run by a person and the yeshiva or Shul is personally his (Or his family), the more modern are run by Boards of Directors and the Rabbi is an employee of the Shul. basically if there is a dispute between the Rabbi and the Big Machers in a Charedi Shul, the Machers are gone, in the Modern Shuls the Rabbi will be gone.