Can i control which wireless clients i like to betrol which wireless clients i like to be connected on my airport base station?

Yes. Use AirPort Utility's MAC Address Access Control.

AirPort Utility > select your base station > Edit button > Network tab > "Enable Access Control" > click the Timed Access Control button.

You need to specify the clients you want to control by their MAC address, which is usually printed on the device's exterior case.