Available in: Professional, Enterprise, Performance, Unlimited, Developer, and Database.com Editions
User Permissions Needed
To edit a public group:
Click the control that matches the type of group.
For personal groups, in your personal settings, click My Personal Information or Personal—whichever one appears. Then click My Groups.
For public groups, from Setup, enter Public Groups in the Quick Find box, then select Public Groups.
Click the name of a group in the Groups related list to display the group's detail page.
To edit the group membership, click Edit.
To delete the group, click Delete.
To view active group members, see the Group Members related list.
To view all group members and users who have equivalent access because they are higher in the role or territory hierarchy, click View All Users to display the All Users in Group related list. Click View Group Members to return to the Group Members related list.