No, think it says at least two games at home, if two teams in group are both hosts, whoever has the home game between the two teams will have all 3 games at home, for example, in our case, with the group being at Wembley and Hampden, if Scotland were playing England at Hampden the other two teams in the group would be playing their fixture that day at Wembley, as England would be guaranteed their other two games at Wembley, the other two games in the group would be at Hampden giving us 3 home games