Open the Airport Extreme Utility
Setup a schedule where specific users do and no not have network access.
Deny specific users access to your network
Change the name of your AirPort Extreme or Time Machine
View the wireless clients connected to your Airport Extreme/Time Machine
Change the name of your wireless network
Change the wireless password users will use to connect to your network
Make your wireless network hidden
Enable interference robustness if you're frequently loose network connectivity.
Change the range for your wireless network - extend or shorten
Take a look at your wireless security options - WPA2 Personal/Enterprise, WEP or unsecured.
Change the password needed to access the shared hard drive
Connect to the shared hard drive using Windows.
Don't see the shared hard drive? Follow these steps
Rename the shared hard drive connected to your Airport or Time Capsule
How to share the drive in your Time Capsule, or the drive connected to your Airport
Enable or disable guest access for your shared drive
Share more than one hard drive and printer at the same time
Select whether you want to use 10.0, 172.16 or 192.168 and more
Share a printer over your network using your Airport/Time Capsule
Share your printer over your Airport/Time Capsule's WAN port