Hotmail: editing contacts

I have grouped contacts together but can't see how to edit those groupls.  Half an hour trying to do what was easy before recemt hotmail changes.   Now I click on 'hotmail' and select 'contacts' from the drop down menu, then click on 'all contacts'  (beneath 'people') and find the group of contacts that I want to edit.    I click on the group and the list of people within that group duly appear.  Then I look at the options lined up next to 'people' which look promising ie 'new', 'manage' (and 'send mail') and spend about half an hour exploring the drop down and going round in circles because none of those menus add one of my contacts to the group.  I tried looking for standard instructions to  no avail.   It's probably easy and obvious to everyone except me, so please HELP !   Thanks.