You must make a reservation for every swimming activity. The group size depends on the activity.
Swimming training is made possible under strict and responsible conditions to allow swimmers to exercise safely and to work on their health. Keeping the 1.5 meter distance between people is the rule. No distance restrictions during swimming.
The national protocol swim responsibly of the swimming pool associations also includes a capacity limitation by a mandatory reservation system for the facility. It is recorded how many people are present, visitors are denied access if they do not arrive on time and it is prevented that there are more visitors than the reservation allows.