Creating multiple reference fields

Hi, 

I have a table called "Team Members" which has a field called "Full Name"

I have a table called "Action Items" which has fields called "Owner" and "Assigned to".

Both "Owner" and "Assigned to" should take the "Full Name" from "Team Members"

It was easy to create just "Owner" by creating One-to-Many "Team Members->Action Items"

But now how do I create "Assigned to"? I tried to duplicate "Owner" and Rename it, but then they both take the same value.