Rearrange Your Control Center
Just like your iPhone, your Apple Watch also comes with a Control Center. While the controls available are set there by default, you can still rearrange them to put your most used ones at the top.
You can only change your Control Center from your Apple Watch. If you have watchOS 9 or below, swipe up from the bottom of your screen. If you’re running watchOS 10 on your Apple Watch, press the Side button.
Scroll down to the bottom and select the Edit button, and then drag the controls to where you want them. You can also tap the minus button in the top left to get rid of that button or the plus button in the top left to add a control to your Control Center. When you’ve finished, choose Done at the bottom of the Control Center.