To see the current members of the admin group for your service, click on the icon for the admin group on your washing line and head to the Group tab.
Adding people to the group
Admin of the group (the people with a green Admin label next to their name) can add people to the group by using the Add a member section below the members list.
Simply type in the email address of the person you want to add, and follow the steps to add them to the group.
Removing people from the group
Admins can also remove people from the group by hovering over their name in the members list and clicking on the red Remove button that appears.