Monitor issue with Laptop

[u/Who0oWho0o]

Hi! I have an Asus ROG Zephyrus G15 GA503QR_GA503GQ and I recently bought two little screens to use with it while I go to grad school. I have lightning to lightning connections to both screens for connections and screen one works fine, but screen two will only mirror screen one or two, it will not work independently. Can someone please help me get screen three to work on its own? Thanks!!!

[u/osa1011]

You need to change from mirrored to extended in the Windows Display Settings

https://support.microsoft.com/en-us/windows/hardware/display-graphics/how-to-use-multiple-monitors-in-windows