To create a #backup on #MacComputer via #TimeMachine and move it on #AirPort#TimeCapsule, you need to follow certain steps, which you can find in the post below. Go through the steps in the exact same order in which those are mentioned and get the backup on your Mac computer or on Time Capsule.
#AppleTimeCapsule can be used as an internal hard drive. If you are using Apple Time Capsule and want to share the #internalDisk while you are away from your #network, then there is a possibility of doing that. However, if you are not seeing the #checkbox related to that option, then there is definitely a #problem.