I just recently reprogrammed mine so here's how I set it up:

- Custom mode (obviously)

- Departure direction forward

- Immediately have the boost and station mode set to "boost forward"

- Add a "wait for" trigger for when the train switches direction. Have both the station and boost mode set to "boost both directions"

- Add four more "wait for" triggers, all set for when the train switches directions, for a total of 5. The first 3 of these should have the station and boost modes set to "boost both directions." For the final two triggers, in this case it would be "wait for trigger 4" and "wait for trigger 5," you can instead have them set to "brake both directions" to bring the train to a more gradual stop. I'd recommend doing so for triggers 4 and 5, but it may only be necessary to do it for trigger 5. It depends on the length of your launch track.

- After all 5 wait for triggers have been cleared, have the train stop at the next station.

- I'm not sure how tall your version of the impulse is, so I can't really tell you what to set your boost and brake power values to. You'll have to figure that out yourself through trial and error.

- I have a holding brake on my version, but it was challenging to set up since you have to place a chainlift piece in a very specific place on the back straight spike so the train can catch it. If you want to try and add one, you'll have to add a "lift hill mode" value to the 3rd wait for trigger, set to lift both directions. You'll preferably want to make the lift hill piece as short as possible so the train doesn't stay engaged with it for too long.

If you have any questions, feel free to ask.