Hi LaserHydra, 
I have a question about your plugin, would you adapt the plugin so that groups can also receive time-controlled permissions?
Because currently only players are supported.

• revokeperm <group> <permission> -- Revoke a timed permission from a group
• grantperm <group> <permission> <time> -- Give a group a permission for a specific time

We look forward to a positive response from your side.