This is not on the watch but on the Garmin Connect app.
I have forgotten to change the pool distance from 50m to 25m. This makes your swim speeds records as being twice as fast. I create a lot of swim workouts and would like to set the pool distance in the app to default all the time 25m instead of having to change it every time I create a swim workout.
I know you can change the pool distance on the watch and that's great if you do not have a swim workout on your watch.
thx