UI on main Screen / Fullscreen video on the second

Hi every one, I’m working with processing 4 on windows 10 for years, but i’m stuck, trying to figure out how to get:
my main script/UI on the first screen (i oftenly use controlP5), with command (that i’m ok with) launching videos to be played, in full screen on second.
From what I read, I have to instatiate a second PApplet that the video will be read in (is this true?), but I can’t find how or any exemples…
Is it something easy to do? Got references?
Thanks a lot

sorry for my mistake (not deleting the comments line in default message that made my first post blank)
Searching, reading, I finally found a example… On my computer, yes, there’s an example in processing examples->Demos->Tests->multipleWindows (a bit to long for a simple demo, but very usefull for my mission)

If it helps someone in the future, it just need to start fullScreen(2) on the second applet (that extends PApplet with his own setup/draw)