Log into your account. Hover your cursor over the main menu in the top left (three bars next to the Side 7 logo) and click "Groups". Alternatively, click "Browse Groups" in the right hand of the "Newest Groups" window on the main page.

To join a group, click "Join" or "Request to Join" on the desired group, or when on the group's page, the equivalent button in its header. If group membership is moderated, you will need to wait for a group admin to approve your application.

To create a group, click "Create A Group" on the right hand side underneath the "What Are Groups?" window. Note that while most group info can be edited, the group name cannot be changed.

Users may create up to three groups by default, and can unlock unlimited ownership with an account perk.