A three (3) minute safety stop is always recommended for every dive over 10 meters (32.8ft).
The time for a safety stop is calculated when you are between 2.4 and 6 m (7.9 and 19.7 ft). This is presented with up/down arrows in front of the stop depth. The safety stop time is shown in minutes and seconds. The time may exceed three (3) minutes if you ascend too fast during dive.
Deepstops activate when you dive deeper than 20 m (65.6 ft). Deepstops are presented like safety stops. You are in the deepstop area when the deepstop depth has up/down arrows in front of it and deepstop time is running.
For safety reasons, you cannot switch off deepstops if helium (trimix gas mixtures) is enabled for the dive mode in use.