Number of groups and Qualified teams per group before bracket
The group stage only works when setup already points to the next stage.
In mobile, Group stage + knockout starts in Taxonomy and format. The organizer defines Number of groups, teams per group, and Qualified teams per group before generating the structure.
That review prevents an invalid combination when the first stage ends. If the qualifiers do not form a valid elimination bracket, the league needs to Adjust the groups or qualifiers before publishing the championship.