Edit or Delete a SharePoint Group from Site Permissions:
- Navigate to the site where the group is located.
- On the site’s home page select Site Permissions from the “Site Actions” menu.
- Select the group to edit using one of the following methods:
- Click on the name of the group in the groups list on the Quick Launch Bar, or
- Click on the Groups link on the Quick Launch Bar then click on the name of the group.
- Click on Group Settings option on the Settings menu.
- On the Change Group Settings page you can make modifications as described above.