When you have multiple coaches on deck during a workout, you'll likely want each of them tracking their respective swimmers. Good thing you can!
The first step is ensuring each coach has their own TritonWear account. No subscriptions are required for additional coaches, so it's just a matter of inviting more coaches.
Once each coach has registered and completed their profile, they can start their own respective workout, select their specific swimmers, and track training sessions independent of one another.
The only thing to be careful of is a swimmer can only be present in 1 workout at a time, so if you select a swimmer who will be training with another coach, you'll just need to end the workout for them so their profile will be available to add to the right workout.