How do I ADD more rows to Item C of the SF330 Part I?
Download and save this page to the proper "Forms Folder" defined under Preferences in the GFS software program:

Refresh [F5] the list of available forms in the File Tree. This new page should be listed under Section A-C.

Open that form, right-click on the form itself (outside of the current field) and select Copy Page from the popup Form Context menu. To add it to another form, move to Page 2 of that form, right-click and select Paste Page from the Form Context popup menu.

If the page is not inserted in the correct location you can right-click again (outside of the current field) and use the Move Page command, either Forward or Back.