Thread:Project:Support desk/Page Protection Options

So I'm trying to figure out how to add more options to the access level drop down. I created a moderator group and granted some extra permissions. I want them to be able to lock pages as well as to be able to edit these pages. However if I lock them as an administrator, my mods can no longer edit them. Also if the moderator trys to lock it, he can not lock restriction to the mod level. The next level is registered users, meaning anyone can still edit the page with the protection on.

So, for this drop down for Allowing edits on a protected page, how do I add an option for my user group "Moderators"?

Thanks