Dear Mr Ofi Khan, In a future update of Spspcer, the subdivision of the section by category should be foreseen: Groups, Sessions and Match List. For example, for the categories Beginners and Youngsters they make three halves of 20 minutes each, consequently the formations lined up on the pitch change for anyway, those who act in the insertion of the formations on the field on the Spsocer component should be given the possibility to field 3 different formations in the same matches of the Debutants and youngsters categories; while for the Under 15 and Under 17 categories the possibility should be given to insert the changes that the coaches intend to make already in the starting lineup. Best regards Vincenzo Marino