You'll want to use GroupUsers with this one. Commands /plugin load PLUGIN: loads the Java archive for PLUGIN from the plugins directory and enables it. Relative paths are accepted. /plugin list: lists all loaded plugins, both enabled and disabled. /plugin enable PLUGIN: enables already-loaded PLUGIN. Does nothing if PLUGIN is already enabled. /plugin disable PLUGIN: disables already-loaded PLUGIN. Does nothing if PLUGIN is already disabled. /plugin reload PLUGIN: disables, loads, and enables PLUGIN, though not necessarily in that order. Theoretically, disable could run after enable, but that would be unlikely/impossible in most/all JVMs. Download from Earth2Me or get the source code.