Creating a group is a convenient way to share files to many people.
Each group has a group admin. The admin is the creator of the group by default. The group admin can add more group admins. He/she can also transfer the ownership of the group to another member.
The group admin can add/delete members in the group. And he/she can also unshare a library in the group.
To see all the groups you're in:
1. Click on the Shared with groups tab on the left panel. You'll see all the groups you're in
2. Click into any group, you'll see the libraries shared into this group.
To create a new group:
1. Click on the Shared with groups tab on the left panel.
2. Click on All Groups
3. In the All Groups page, you can click +New Group to create a group.