Contact groups have been phased out. You can create a category and filter by that category as a workaround. To create a group to use for group chats, see Start a group chat.
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              Select People in the left pane. 
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              Select - 
              If this is the first one for the category, type a category name. If not, select the category to add the person to. 
To list just your group (category), select the name from Categories in the left pane. Tip: To delete a category, choose it, then select  
 
                         
				 
				