How to control Loopmash & beat making plugins

Apologies if this is a newbie question but…

Once plugins like Loopmash are running in a track they seem to just loop forever

I would like to control when on a track it’s on & off like you would with regular midi notes

I can manually mute on & off but when I want to arrange a track ready for mixdown etc I would like more control

I’m sure it’s simple when you know how…

Any useful help welcome!