To add an item on any of the Lookup Lists:
- On the form that you are working on (Invoice, Estimate, etc.), go to the Lists menu and select the Open Lookup Lists option.
- Select Lookup List you wish to modify from the left-hand side and click the Open List button.
- On the Edit window, click the New button.
- Fill out the necessary information and click the Save and Close button.
- Click the OK button and then the Close button.