Board Thread:Support Requests - Getting Technical/@comment-5267906-20130509023031/@comment-4674838-20130509041305

So, and this applies in general, if you want to create a custom user group on your wiki, the process is:
 * 1) Decide the details about the user group (what purpose it will serve, what kind of abilities you want it to have)
 * 2) Open a public discussion on your wiki where everyone can discuss it
 * 3) Once there seems to be some agreement or consensus, contact Wikia staff via Special:Contact. Give them 1) a description of the user group you want and 2) a link to the community discussion so they can see there is general agreement in favor of the change

You can look up group rights at Special:ListGroupRights on your wiki. To be honest, I'm not familiar with all the rights and what they do exactly. But, generally speaking, admins have most of the rights, and other user groups generally do not have access to the tools that admins do. Rollbackers and chat moderators cannot highlight posts or do any admin stuff in the forums &mdash; rollbacks simply have the rollback ability for reverting vandalism, and chat mods can simply moderate the chat.

In terms of what rights you would need for a "forum mod", if I were to guess, it looks to me like these ones are pretty relevant:
 * forum (forum)
 * forumadmin (forumadmin)
 * forumoldedit (forumoldedit)

The important thing is just to have a community discussion, and list out all the abilities that you want the custom user group to have. If you say "need to be able to highlight posts and close threads" &mdash; Wikia staff can figure out what rights are needed on a technical level to make that happen.