>>665>How do I post with a capcode?
Says in the documentation, doesn't it? However you format your capcode in instance-config.php is the way you use it. The standard is 'name ## whatevercapcodeyouuse' or just '## whatevercapcodeyouuse' if you do not namefag or tripfag while posting with it.
>And can I keep regular users from using the mod/admin capcodes?
Your capcode permissions are set to mod by default I believe, so a non-mod can't even use them. You need to be logged in to the imageboard moderator system in order to even make capcodes work. For regular users, attempting to use a capcode results in a tripcode instead due to two hastags (##) generating a secure trip.