Manage devices in my WiFi

Hello all,
maybe my question is easy, and maybe not..

I really can not find a solution, so I hope somebody can

In my home we have a PC, 3 laptops, 1 smartphone, 1 iPod, and more to come.. because my kids are teenagers LOL

I still want to be in control on how many time they spend on the internet
So I would like to be able to enable and disable these devices on my WiFi connection.
For example on saturday evening no Wifi for the laptops and iPod, but still active on the PC. etc

Can anyone help me with this?

Regards
Wilco

get the mac addresses to the devices and lock them out.
There are some AP devices have a scheduler