When changing the operating Mode to Weather (Emergency) is there a way to also change the Ring Plan?

Ring plan is in the phone system and weather is a voicemail mode.No you can't change the voicemail to weather and have the phone system automatically follow it.

I understand that but if you use 4.3.2 Holiday list and set Ring plan to 1 and VM mode to 4 it does what I want. The problem is if all you have is a phone connection to the system, changing the mode does nothing if regular business day calls are not answered by the AA.

Correct which is why I said it won't work.No reason the software couldn't do it if say the weather /emergency mode is activated then put phone system into ring mode X but that's not an option.You need access to the phone system remote to do it manually.

When I think about it this is also a problem for holidays that are not on a fixed day. I guess I could go into 4.3.2 at the beginning of the year and configure them and hope to remember to change them the following year. It is a pity that there is not a year column in 4.3.2.

Correct you kind of need to reset the holiday schedule once a year