Visit the “organization” tab on your organization management page to manage groups.
Click on the "..." button and choose “add a group". “Untitled group” will appear. Click on "..." then "edit" to rename the new group.
Click outside of the group to see what your organization now looks like.
To add or change an image for a group or subgroup, enter edit mode for that group. Then, click on the icon to the left of the group name to add an image for that group.
To add another group to your organization, repeat the process.
Click on a group’s "..." button to rename it, remove it, or add a group within it.
Here's a nested group.
Click on the new group's "..." button to edit that new group.
Create as many groups and groups within groups as you’d like.