Falco's Prop Protection


I have installed FPP, and I want to restrict some tools for the user group.
But everytime I add a tool to the group tool list it isnt blacklisted.
This is what I do: Q -> Utilities -> Admin settings -> Group tool restriction -> Load group and members (then I select group) -> Edit selected group’s tools and then I just put the tools in the other list but it doesnt blacklist them?
Am I doing something wrong? Thanks for taking the time.