I have a very similar issue. My starting roster has 12 forwards and 6 defensemen with no bench. However, managers have the ability to roll with less than 6 defensemen, utilizing those open roster spots with additional forwards despite the fact that there is no bench. So teams would have 13 forwards and 5 defensemen or 14 forwards and 4 defensemen. I don't want them to be able to do this and when I police it manually managers give me lip.
I have a very similar issue. My starting roster has 12 forwards and 6 defensemen with no bench. However, managers have the ability to roll with less than 6 defensemen, utilizing those open roster spots with additional forwards despite the fact that there is no bench. So teams would have 13 forwards and 5 defensemen or 14 forwards and 4 defensemen. I don't want them to be able to do this and when I police it manually managers give me lip.