Hi, jujun!
You can use the Beyond Universe window for this purpose
View attachment 1487
When you working with a combination of laser graphics and video projection, you need to consider at least a couple of things:
1. The laser projection is square, while the video projection is rectangular (4x3, 16x9, etc.).
To adjust the form difference, use the Video tab in the Configuration settings
View attachment 1488
2. The square laser zone can be located either inside or outside the rectangular video window.
See 2 examples of Universe layouts for 2 such cases in the attachment (Universe.rar)