This help article will guide you on how to create a new contact in your ISN besides Clients, Agents, Insurance Agents & Escrow Officers.
To add a new Contact like Contractors navigate to Clients/Agents -> Contacts -> Contact Types
Click on Add Contact Type located at the top left corner of the screen. Give your new contact a Name, for example "Contractor" and then click Add.
After you have created your contact type, you will be able to add a new section/tab in your order form by customizing your order form. Then you can add your new contact (Contractor's) profile.
To learn how to customize your order form click here.