Other than using MAC Address Access Control, is there another way of temporarily removing a user/computer from having access to an Airport Extreme wireless network? There is currently an unruly teenager come stay with my family to have a holiday/get some work experience, but she's on her laptop (accessing Facebook) until the early hours of the morning. As a result she's been late for work every morning. I'd like to bar her computer from accessing the internet from maybe 10pm - 7am. Is this possible, other than using MAC AAC?