The Drafter - Your job is to be in charge of drawing out the constraints on the product, and make sure that during the design process you really keep your group focused on meeting the needs of the product redesign as well as understanding the constraints.

The Communicator- Your job is to lead up the presentation at the end of this project. You will contribute to the rest of the process, but you will be in charge of heading how you are going to communicate your decision of material, and helping that to get done.

The Arbitrator- You are there to make the final decision on which material will be selected and you will be in charge of ending any disputes between your group members. You will have to remind your other group members to pay attention to the material constraints.