The Contract Terms section is a new section for users but contains information that was formerly available in the Fee section of the Admin tab. The Contract Terms include all of the fee fields currently available in the Admin tab, with the addition of the Contract Sign Date field and the ability to include multiple documents.
Clicking "Edit" within the Contract Terms panel allows you to edit all information within. This includes selecting the Contract Sign Date as shown below. A wonderful tool for keeping track of the terms, fee, total compensation, etc.