The main window for CCRQBOM serves as a container for the windows that represent the various functions of the program.

Preferences lets you change various settings that affect how the program works.
Forms is used to edit the layout of any of the reports in this program.
BOM provides functions to display and print a bill of material, generate requirements reports, and issue single or multiple level builds.
Order lets you work with estimates, sales orders or invoices to generate a list of required assemblies and generate requirements reports from the orders.
Multi-Build can be used to work with multiple assemblies at the same time, so you can enter a list of assemblies to build and see a combined requirements report.
Cost is used to update the “cost” field (not the “average cost” field) of inventory assemblies based on the cost of the components, including sub assemblies
Report is a menu that provides a variety of QuickBooks reports, such as the where used report.
File is used to select a different company file to work with (as explained in the Program Management chapter).
Help lets you access the on line help file as well as make changes to the appearance of the program, and set various operating parameters (as explained in the Program Management chapter).
Window lets you change the way that the various windows are managed in the program (as explained in the Program Management chapter).
More:
BOM - Working with a Bill of Materials