Do a search on the term Latch
https://www.vexforum.com/search?context=topic&context_id=106390&q=Latch&skip_context=true
Or here
https://www.vexforum.com/t/on-off-switchable-motor/101415/13
Do a search on the term Latch
https://www.vexforum.com/search?context=topic&context_id=106390&q=Latch&skip_context=true
Or here
https://www.vexforum.com/t/on-off-switchable-motor/101415/13