AdminMod adds much more functionality than that... It basically let's server administrators give friends, clan members, or important people access to various features of your server. The reason it didn't work on your server is because you did not have the most recent version of MetaMod which contains the entities for every mod. I would recommend going and downloading it off of the
MetaMod site and then try again. And don't yell at the ESF developers because it is not their fault in any way. Mod functionality is completely dependent on MetaMod.
Anyways, check out the
AdminMod manual for more information.
- AdminMod Beta Team Member