I really want the police group. The server is kinda getting to complicated.
Here is a break down of the class distinctions:
New: cant do anything really.
Player: can build normally
Builder: Can spawn items for self. Cannot give to others. (replaced guides)
Builder+: Gains world-edit abilities, kick and can create warps and warp signs.
Green groups above will take a player from normal basic permissions to full builder features/permissions but they do not grant and administrative permissions.
Official: Full essentials permissions(kick/ban). Lowest rank that can promote/demote other players.
Moderator: Moderators can do pretty much everything. They are essentially admins with a lesser title.
Admin: Can do everything.
Red groups above represent groups that have administrative permissions such are promote/demote/kick/ban.
Now we can give players full build permissions without also having to give them administrative permissions. Essentially that is the main difference.