How do you do that?
The easiest way is if the designation “Catholic Caucus” is put in parentheses immediately after the title of the thread when it is first posted. After the article is posted, you will no longer be able to modify the title further, so you just need to contact the Religion Forum administrator and ask him to add Catholic Caucus to the title.
You might also want to review the rules regarding caucus status here on the Religion Forum. This thread would certainly have qualified. The main rule is that nothing in the contents of a posted article can reference any other denominational stance, pro or con. The standard is sometimes too broad for my tastes, but it ain’t gonna change. Anyway, once the designation has been established, the thread cannot be trashed or hijacked by non-Catholic parties. It is a good protection against the just plain sacrilege that can take place in the comments against Catholic topics sometimes!