mod panel, add a group to the "ban a user" section
 

I made a special group that I want mods to be able to add a user to, not just the ban group. any ideas?

ideas about what with so little info hard to help

in the mod panel moderators can ban users. vbulletin does this by allowing the mod to select the "banned" user group from a drop down menu, the only option in the drop down menu is "banned user group" I want to add another group to the drop down list.

I see what you are looking for now. Check around to see if there is any template edits or plugins

In this list only groups are shown, that are set as "banned" groups in ACP->Manage Groups.
So set other groups to be "banned" and you can assign them in ModCP.

Yeah, I think the option is something like

AdminCP>Usergroups>Usergroup Manager>Edit the Usergroup you want to show in ModCP> Go down to the Usergroup Options and look for the option "This Usergroup is not a 'Banned' Group", and set that option to "NO".

That Usergroup will then act as a banned Usergroup and should show in the ModCP.

That worked but I wonder if it will make the group behave as a banned group.

Well it literally says this under the option:

this is the part that gets me.

AFAMK "banned" groups cant edit their email nor use subscribe function too.

What are you trying to achieve?
Making other "banned" groups or trying to give mods abilty to set usergroups?