Start the Scenario Generator with the Group Standings part
It isnt there when it starts, but after you add a bracket appears. Have it there from beginning for that first bracket that is there.
Or at least say 'Select a bracket to see Group Standings.' At first i thought that it didnt show that part after i filled in the outcomes and still didnt see the group standings results. Then i eventually added a different bracket and it worked. Start it out with those group standings.