UBB.threads PHP Forum Software Community Forums Resources and Customizing How Do I? Signature Limits

I've clicked all over and around in the CP for my board, looking for the input to edit the limit on signature length - to no avail.

You'd figure it'd be in the Profile Settings section, but it's not - and it's nowhere else, either.

Am I just overlooking something?

Control Panel, Group Management, Site Permissions, Maximum length of signatures