How do you use sketch booleans?

Hey guys, I'm new to SolidWorks but have been doing CAD for a while (mostly FreeCAD). Is there a way to create a new sketch as an intersection, subtraction or union from 2 existing sketches?
Doing some searching, apparently there is (or was) a feature called sketch booleans which looks like precisely what I want. I found this old tutorial about it, but the video link is dead:
I also found some other 3rd party tutorial with links that lead nowhere but that's about it after doing quite a bit of googling. I've searched all the menus and tabs in the software itself and the help but for the life of me, I can't find it. Can someone more experienced in SolidWorks than me tell me how to invoke these sketch booleans command?

Thanks,
   Omri