name of special user

My forum don't appear "admin", "mod", underneath his user name in profile box. So how can I do that?

You can create a group named moderators. Then edit the permissions of that group and add the people you want in that group. You can also make a special rank.

"You can also make a special rank." How?

Go to admin panel=>Users & Groups=>Ranks=> Rank Administration. Click on the "add new rank" button. Enter the name you want it to have and select Yes at the "Set as Special Rank" option. For "minimum posts" leave an empty field and add a url for the rank image, if you have one, if not choose one from the defaults and then click on save. Then go to the profile of that person you want to give the special rank to and scroll down to the bottom and look for the "Rank Title :" option, choose the rank from that bar and click save.

thank you very much

You are welcome!