Button to reset race simulator

Hello. I am designing a race simulator to simulate participants in a walking race. Screen 1 is where walking rates and starting positions are entered into a table. Screen 2 is where a button will start the race, pause the race, and reset the race (I copied Jay Chow’s “animation reset” activity). The way it is designed now, the race will reset using the same button that toggles between play and pause only after a set time passes. I would like to have a separate buttons - one to toggle between play/pause and one to reset to the start. Here is what I have so far: RACE SIMULATOR

Thank you for your help,