We have not been good at announcing them recently. Looks like the most recent announcement was in June (2 months ago): Next online office hour today, June 9
So contrary to your strongly worded assumption about what “anyone new to the forum” would know, in fact most people new to the forum hear about the office hours within a couple weeks. I’m sorry if you joined in the last 2 months and didn’t hear about them right away.
I won’t take the time to explain exactly why announcements have slipped lately or why I don’t have time to arrange a special meeting just for you, but please think about the fact that almost everyone else here is also in academia and also has deadlines of their own to manage, and almost all are answering forum questions as a volunteer activity (exactly 2 people support MNE as part of their job and neither of them do it full-time).