Set after installing the projectors, the projection to 4:3.

Adjust in Windows the Display settings to:

• Multiple displays, select extend displays. Apply.
  • Select identify, and choose the order.
    • Select Standing and apply.
    • Click on advanced monitordisplay.
      • Set for both projectors the resolution to 1200×1600
        (so the ratio is 3:4)

Start ViSoft Premium

Press F8 to start the Live module for the first time. Open the settings and the tab Wall Board and press auto detect.

Project a wall board and check if the tiles are 1:1.