This plugin allows to run command as someone else, according to the rules the owner added.
Be careful, this plugin can be DANGEROUS (at least as dangerous as the owner is), use it at your OWN RISKS. If you don't know how to use it, DON'T USE IT. If you don't know what you do, DON'T DO IT. If you don't know what the frak you are doing is, DON'T DO IT.