Hello madness,
two advices:
1) Deselect the "Center on Screen" setting in the vi properties. Then move the windows to the desired postion (and size) and save the vi. Then it will open in that position. This is the easy way, but can lead to an "ugly" look, when the screen resolution changes.
2) Use property nodes (VI->FP.WinBounds and App->Disp.WkSpace) to set the window position (and size) for both windows. This way you can adapt the window position to changing screen resolutions.
Best regards,
GerdW
Best regards,
GerdW

using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019