To modify and rename interval bells, follow these steps:
- Navigate to the Timer tab (middle icon) at the bottom of the screen.
- Access the Interval Bells section.
- Choose the bell you intend to rename by tapping on it.
- Locate the three dots next to the current bell name, positioned at the top-right corner of the screen, and select it.
- Choose the 'Rename' option.
- Input the new name and confirm by selecting 'Save'.
- Validate your changes by hitting the 'Save' button, again located at the top-right corner of the screen.