You should use the SimVIm dimensions (template) for your cutouts.
Or start the panel and make your template from the screen.
1. To move the panel position: use the arrow keys (up,dn, left,right.)
After you use arrow keys to move the panel, pressing "Enter" will save the position.
2. All instruments are displayed always in their real size (3,125" ) on any screen automatically.
The program usually detects the screen size correctly.
If not - enter your horizontal screen size and press Enter.
You can change the scale, by entering another horizontal size not matching your LCD.