RBK53; Time Based Guest Network

it would be great to have the guest network automatically be switched off. this must not be on device basis but a global option. let's say you can switch guest network on for 1, 2, 4... hours and then it switches off automatically. i only want to enable guest network when it is needed, when i have friends or visitors coming by. i have seen this feature on other routers (i think asys lyra)

one more thing at the moment i have enabled mac filtering. it seems that mac filtering is also a global option which affects all wired and wireless clients AND is also works for the guest network. i want to have mac filtering for my lan but not for the guest network.

Markus