I'm looking to be able to do something like a WAN kill switch for the kid's devices. I'm currently using access restrictions, but don't like having to enable/disable and save multiple different groups. Is there a better way to dynamically block groups of devices which doesn't require committing the changes to flash? I may only want to have a block 24/7 but if homework and chores are done, flip the switch and they have access for 3 hours or whatever. Is there a way to do that in the tomato firmware?