Managing contact groups: Edit, Add, Remove, or Delete Contacts

To edit the contact group name:

1. Click Gmail at the top-left corner of your Gmail page, then choose Contacts.
2. Select the group you'd like to edit along the left side of the page.
3. Click More and select Rename group.
4. Enter the new name and click OK.

To add contacts to a contact group:

1. Click Gmail at the top-left corner of your Gmail page, then choose Contacts.
2. Select the contacts in the Contacts list.
3. Click the Groups button .
4. Select the name of the groups you'd like to add these contacts to, or select Create newto create a new group.

To remove contacts from a contact group:

1. Click Gmail at the top-left corner of your Gmail page, then choose Contacts.
2. Select the contact in the Contacts list.
3. Click the Groups button .
4. Deselect the checkbox of any groups you'd like to remove these contacts from.

To delete a contact group:

1. Click Gmail at the top-left corner of your Gmail page, then choose Contacts.
2. Select the contact group from the groups list.
3. Select Delete group from the More drop-down menu at the top of the page.
4. Click OK.

This will delete the group but not the actual contacts themselves. Those will remain in your Contacts list.

Note: These instructions work only with the newer version of Gmail. If they don't match what you see in your Contact Manager, we suggest that you upgrade to a fully supported browser or click Newer version in your account.

Reference - Google Group Help - Manage Contacts