The workshop proceedings is slated to appear in the IEEE Xplore digital library. In order for your paper to appear in this proceedings, you must submit a copyright form to the IEEE. The final form will be similar to this sample IEEE copyright form. (We don't know why the final close parenthesis is missing in (B&B); it appears to be a bug in the IEEE copyright server.)
Before you start this process, you should carefully study the sample form and discuss it with any co-authors. The form mentions other IEEE documents you may also want to review:
In order to start the process for submitting your IEEE electronic copyright, please fill out the following form and press the Go to the IEEE Copyright Server button.