Expression maps and keyswitches

How do i enter keyswitches when i write in music,
Also is there a video, or text on how to use an expression map

win10 64

You don’t enter keyswitches directly, but rather you enter the playing techniques that give rise to keyswitches, provided you have an appropriate VST Expression Map. If you’re using the supplied HALion Symphonic Orchestra sounds, everything should happen automatically when you add the appropriate playing techniques.