This section should be changed to "add -> simple locomotion" with options for h-bridges. I qualify with "simple" because it assumes differential steering.
Add -> hbridge should be changed to popup a dialog that lets you:
1) select 1 or more h-bridges (of whatever type) creating an on-screen visual of your selection
2) use a single UI to trigger any of the h-bridge circuits in either direction
3) push a "brakes" button where applicable for h-bridge braking
4) link joysticks / keyboard commands / ipad gestures to aforementioned UI widget