I am unable to add contacts to my existing groups because I don't have the option to click "Edit" in the command bar once I have located my group name in my contacts list.  So how do I add and delete people to my groups?  I was told to follow these instructions:

The steps in adding and deleting members in your Groups are as follows:
  1. Go to your People page.
  2. Locate and click the group name in your contact list.
  3. Click Edit in the command bar on top of the page.
  4. To delete a member of the group, click the X button at the bottom right of your contact's picture.
  5. To add a member, type the contact's name in the Add member box and click the desired contact from the dropdown option.
  6. Click Save.

I got up to Step #2.  However, I cannot do Step #3 because there is no "Edit" tab.

Thank you for your help.