Toggle cordless network setups with a little manuscript

I desire the capacity to toggle in between 2 cordless states :

1. Only connect to Access Point A, disconnect from anything else now, attempt to connect to AP - A.

2. Only connect to AP - B or AP - C, disconnect from AP - A, attempt to connect to anything permitted.

The 2nd fifty percents of each could conveniently coincide code (disconnect from every little thing, connect to anything permitted) yet just how do I manuscript the first little bit?

This can be attained by hand by opening up the links setups screen, editing and enhancing a link, and also toggling the "Connect Automatically" checkbox.