The most effective mechanism I’ve found for rolling out No Wrong Door is initiating three-way conversations when asked questions. If someone direct messages me a question, then I will start a thread with the question asker, myself, and the person I believe is the correct recipient for the question. This is particularly effective because it’s a viral approach: rolling out No Wrong Door just requires any one of the three participants to adopt the approach. Even the question asker can do it, although the power dynamics of the interaction do make it a bit harder for them.