Ubiquiti Air Router HP - How to change networks

Question 1
My home network ip range is 192.168.x.x
The air router is configured to the 10.xx.xx.xx network range
Not being a network wizard I'm not sure how to make it available on my network like it use to be when the house was setup in the same 10.xx.xx.xx range. 

Attached is an image of the setup page on the Air Router

Question 2
I also need to change the two other devices located out of reach. Is there a way to do it remotely because if I'm not mistaken once I change the Air Router IP I wont see the other devices still on the 10.xx.xx.xx network.

Additional note - I am in a Mesh Network with other local hams. Will this be able to be in the network if they have a different IP range?

Thanks in advance - N3IIG / Jim