Hot spot wireless

Hi there , new to your world, trying to find out something. Apparently the peplink pep wave SVS-AGN -1 is an excellent wi fi booster for rv usage. My question,s are these please
In approved wi fi hot spot applications it lists the AT&T elevate as being compatible, what I do not see is if it will connect wirelessly or if it has to be tethered to the device.
Also in order to program the unit can I use an iPad wirelessly or do I need a windows laptop.
Thank you