CoreData - many-to-many relationship with priorities

I have conceptual question about DB schema. I have 2 entities: Team and Member.

1.Member can belong to many Teams,

2.Team can have many Members.

So it's many-to-many relationship and I've implemented it successfully. Now the client wants to have ordered Members within a Team. So Member can have priority in one team different than in the other.

How properly implemented DB schema should look like? I considering about 2 options:

• with minimum work effort
• the proper solution

Any hints are more than welcome. Thanks.