Hit the mode button.
You can select to do your interval reps based on:
Distance, Distance Rest
Distance, Time Rest
Time, Time Rest
Time, Distance Rest
You can also include how many reps you want to do AND if you want to include a warmup/cooldown.
I set mine up for 3min then 1min rest for 10 reps with warmup/cooldown. Basically, when you have this set up and hit start to begin your workout, you’re in “warmup” mode until you hit the LAP button. Similarly, when you finish your last rep, you will go into “cooldown.”