How to customize the function of the down button on the Xiaomi Watch S3?

The default function of the down button is to open Workout. It supports customization, and the optional range includes all applications of the watch.
You can customize the down button by the following path:
On the watch, navigate to [Settings] >> [Customize Down button] >> select the application as your preference.
Note:
1. To use this function, please update the watch to the latest version;
2. For a good experience, it is not recommended to set the power button to a function that requires frequent confirmation or accidental triggering.