BRING ALL IMPORTANT COMPLICATIONS FORWARD
Like its predecessors, the Galaxy Watch 4 lets you play around with the watch faces. You can select from a minimal watch face or an activity-focused watch face.
The best part is that you can customize these watch faces further and bring your favorite complications to the table. For instance, if you want the AQI, Barometer, and Step counter to show up on the home screen instead of Breathe and Sleep complications, you can do so.
To customize the watch face on your Samsung Galaxy Watch 4, long-press on the watch face to go into Edit > Customize.
Once done, tap on each of the complication spots, and pick one as per your preference.
Source : guidingtech.com