Click on an existing group in the Groups section of the menu.
Then press the edit button in the upper right hand corner. You can change the photo, name, description and people in the group.
You can add people to the group by clicking on Add People, and select people from your organization.
NB:Only admins ands owners can edit groups
Editing people in groups
To change what groups a person belongs to, go to that person’s contact.
Then press edit.
Scroll to the bottom of their contacts, you will see which groups they belong to.
Click on the group field.
A module will pop over with the exciting groups, and the selected groups are the ones the user is already in.
Select all to add the user in all groups or deselect from the groups he/she/they are already in. You can also check the checkbox to select the group or deselect from the group.