If the access point is only meant to be used by the Sunday school, and they only meet at certain times. why not just switch the AP off when the Sunday School meeting isn't running?
If the software allows it, would it make it easier to simply set up a schedule that allows for connectivity between 9:00am and 11:00am on Sundays?
This may be an excellent option, provided they can either learn to modify the schedule on their own, or count on a techie type to be there for them when they're needed...
Fifty-seven countries signed a UN treaty on Tuesday that bans governments from carrying out forced disappearances and holding individuals in secret detention. Washington, as well as a number of European governments, including Britain, Germany, Spain and Italy, refused to sign.
Time is an illusion perpetrated by the manufacturers of space.