STEP-1: Click on Home -> New option and select Contractor. Vendor HR Contractor window will appear.
STEP-2: Fill the details.
STEP-3: Click on Add New button to add other parties of this main contractor. Party form will appear. Fill the details and click on Ok. If other party is not available, you can click on create default button.
STEP-4: Click on Save button.
List
Click on Master -> Main Contractors. To see selectable parties, click on Master -> Contractors. List will appear.
Edit
STEP-1: Click on Master and select Main Contractor or Contractor. List of contractor will appear.
STEP-2: Select the contractor that you want to edit.
STEP-3: Right click on it. Select Edit Vendor.
Or
Click on Context Menu -> Alter option and select Edit Vendor.