How would I create a task report that only shows tasks with more than 1 person assigned?

[tplunk]

I am trying to create a task report that will filter out all tasks under a program where only 1 person is assigned. Is there an easy way to do this?

Ideally, I would like to create a report that shows the user's role for each person assigned, but I believe Workfront is only able to show the role for the primary assignee.