Fixture Builder Movement Speed

Hi guy’s

I’m new on hog systems and now just started to get in touch with my Roadhog 4.

Well my question is ( maybe I am just too stupid to find it....): how can I set the movement speed to a channel on the fixture builder?

I tried it with constant and then looking for any function or value. But couldn’t find anything with mspeed.....

Thanks for your help.
Greetings
Marcus