help with NETGEAR WiFi Mesh Range Extender EX8000

So - when I had a D-LINK extender set up (the d-link just plain stopped working for some reason, and was unable to re-set it no matter how many tries, so I upgraded to the NETGEAR EX8000) I was prompted to do so with network names that included a "EXT" to indicate they were extensions of the primary network names  - where as with the EX8000 it just took the names of the existing 2G/5G networks I had established in the FIOS router.

Can I modify the EX8000 network names to be unique and set unique passcodes so that I only allow devices to attach to those extended netowrks rather than the main FIOS WIFI router netowrks unless a device has also specifically already authenticated to one of those networks? 

I still dont understand why the profiles/rules and schedule did not work when I used the FIOS router to "PAUSE" internet access on devices I knew were my childrens, unless somehow they are being dynamically allocated new IPA's when attaching to the EX8000 and thus my rules were not in affect as they were set against different IPA or original IPA ?

Does the EX8000 via NIGHTHAWK interface allow me to shedule a routine like disabling intrernet access at a specific time for a configured network by its name or allow for device by device admin control/access control via scheduled routines?

Thanks again

Murph