Tool/Method for controlling monitors.

[Cah]

Is there any quick way to control which monitor is the main one and whether it extends to another monitor or duplicates itself? I don't find the dialogue that comes up via the notifications panel reliable. Ideally I want a way to change the set-up programmatically. I have an Asus Zen hybrid - not recommended!. It has two screen so when I add a TV it has three. I cannot get the settings I want to stick. It's especially irritating when Windows decides to make the TV the main screen as I have no way of accessing it. Really in need of a solution. Thanks.

[HansV]

I assume that you are familiar with the Windows key+P pane.

I've seen enthusiastic reports about DisplayFusion. It comes in a somewhat limited free version and in various full-featured pro versions.

[Cah]

Thanks, first glance indicates the pro version might be what I need. Will try it out. The Windows Key + P pane is what I was referring to in my initial post. It fails spectacularly on the Asus Zen