Is it possible to add meta data for a many-to-many relationship

I am wondering if this plugin would enable me to replicate the following which I was able to do in Rails.

I have a database of movies. In it, I had a many-to-many relationship between a PROJECTS table and a PROJECT_MEMBERS table with a pivot table in between, ROLES. This ROLES table contained, not only the role this project member played in the project (actor, director, etc), but also the character name if the role was actor.

Is there a way to do this with this plugin?

I installed this plugin and so far not having much luck with it.