Overview
Step 1: Open the group that you would like to add a member to.
Step 2: Navigate to "Directory" > "My Organization".
Directory is a drop-down in the top navigation bar (between Activity and Documents); it opens to My Organization and External Contacts.
Step 3: Click on "Groups" at the top, then locate your desired group in the groups list.
The My Organization page has a row of filter tabs directly above the list: All, People, Groups and Locations.
Step 4: Click "Edit" in the upper-right corner.
The Edit button is at the top of the group page, to the left of the Enable Calls toggle.
Step 5: Go to the "Members" tab and click "Add Member".
The group editor has two tabs, Owners and Members; the Add Member button (with a plus icon) is at the right-hand edge of the Members tab.
Step 6: Search for the user you want to add and select them to include them in the group.
A search box appears under the Members tab. Type the person's name and the matching users are listed below it with their title and presence status; click the right one.
Step 7: Once you've added all desired members, click "Save" to confirm your changes.
The Save button is at the bottom of the group editor, with Cancel beside it.