Is there way to limit how many cards a member can be added to at the same time
or:
Limit how many cards with the same member added to, can be placed in the same list.
Examples:
A member can only be added to three cards and he/she has to be removed from a card to be able to be added to another card.
or:
A member is added to 4 cards but can only have 3 cards in the same list and must move out a card from the list before adding another.
