Setting Up Two Netgear WiFi Range Extenders on the Same Network

I live on a ranch and the only connection to the internet available to me is through my Verizon MiFi Home device (Novatel Wireless, Model number NOVT1114V). I have three buildings close together, where I need internet access. I have two Netgear Range Extenders: EX6100 and EX6200. I am NOT trying to leapfrog one to another, to extend my range. I am trying to have both of them use the Verizon MiFi device as "home base" and extend the range in two opposite directions (one with each extender) so I can have the Verizon "mother ship" in Bldg. 1, the EX6100 in Bldg. 2, and the EX6200 in Bldg. 3. The distance from 1 to 2 is only 50 ft. and from 1 to 3 about 150 feet (max).

My problem is that when I use the WPS to automatically set up the two range extenders, it tries to give the exact same network name, with the _2GEXT & _5GEXT to both of the range extenders. I can't figure out how I can change the extensions on one of the two so that I can "see" both extenders and their respective 2G & 5G network labels.

I have a JPG picture I drew out, but can't figure out how to attach it to this posting! It is on my laptop drive.

Any help anyone can provide would be GREATLY appreciated!

LES