If you are not yet in a group, tap on the speech bubble icon Social in the bottom right corner of the game. Then either search for a specific group, or pick a promising candidate from the list!

If you want to look for a better fitting group instead of your current one, you can leave your group with these steps:
- Open the game
- Tap on the name of your group up top
- Tap on Settings
- Tap on Leave
- Tap on Yes
- You are now able to join another group!

But be aware that if you are level 7 or above you will trigger the Social Cooldown!