Just save 2 Work Environments.
One set up for just the laptop on its own and the second set up for use with the second monitor.
Then you just apply the WE scheme that you want to use when you want to use it.
I don't know that Archicad will ever recognise when you have a second monitor plugged in, if it is turned on/off, what resolution it is, is it on the left or right side.
Barry.
One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11