Lottie animation start time

Hi! I have a Lottie animation of a map, and three buttons (the three brackets). On click of a button, I would like to play a specific corresponding part of the animation.

But when I try to do that using different starting times of the animation, it does not seem to work properly. Is there a correct way to do such things?

An alternative use would be to highlight certain parts of the map on click of one of the buttons.

Thank you!

Here is my public share link: HERE