Forgive me if this already exists, I tried looking for extensions and settings related to the sign up dialog and didn't find what I was looking for.
We are intending to make our forum for ages 16 and up only. We have this listed in our rules, but we got some feedback that it would be better if that rule was mentioned on the sign up dialog as well, which I would agree with. I haven't been able to find any way to customize that dialog, though.
I did find the age check extension, but this isn't really what we want, since it looks like it also blocks you from viewing if you're underage.
We're not really concerned with who is viewing the content on our forum, only who can have an account there.
I think it would be helpful to have an extension that allows us to add a small section of custom text there. Even better if it has markdown enabled so we can add links. For our purposes we could list our age rule, but I can also imagine other uses such as noting that usernames must not include your real name, or directing you to read a certain informational post before you sign up, etc.
Of course, it would be better if people simply read the rules before signing up ๐
I know better than to expect that will happen though