1. Choose the event you want to change the tracker mode.
2. Tap the Edit button located on the bottom menu.
3. Look for the Tracker mode field and tap it.
4. On the tracker mode list, tap the Custom option.
5. Year, Month, Days, Hours, Minutes, and Seconds are enabled by default. Untick the box by tapping it to disable an option. You can always enable it by ticking the box again.
6. Tap the save button to save the changes.