As requested by Roos-Skywalker I have added a bunch of permissions to the plugin so now you can give your players the following permissions:

lb.set : allows the player to set (NOTE: this is default true, so you'd have to disable it in luckperms or whatever you're using)

lb.exempt : players with this permission are exempt from bounties, so no one can set bounties on them

lb.reload : allows the player to reload the plugin (reloading is still buggy)