When writing a new post on this community, after selecting a category you can choose from optional tags. When you click this, you are prompted “Search or create…”. But if you type a tag that doesn’t already exist, it seems you cannot use it (pressing the Enter key gives no response).
So how do you “create”?
PS I’d still like to push for a “Meta” category in this community. support.paratext.org is a community using the same platform as this community, and it has such a category. In the absence of this category, if I want to write about the community platform itself, the best I can do is add [Meta] to the title (i.e. the subject line).