I would like an option where the path of a person or vehicle starts as soon as I start the scene for a video

Lately I’ve been testing Twinmotion, I really liked it and I see a lot of potential. That’s why I would like to comment that I miss an option where the path of a vehicle or a person walking starts along with the video. I often have to start rendering without being sure that the object I’m moving will appear right away… This causes a waste of time if I have to restart every time until I get it right…