The crazy thing is that this feature already existed! it is still in some of their documentation (until they delete it from there). It was discussed in this forum link just over a year ago. https://forum.roadtrippers.com/t/adjusting-dates-when-adding-a-stop/606

Roadtrippers recently is deleting a bunch of features, instead of adding new ones. They delete 5 more and there is no Roadtrippers left! WTF?