Hi there, User_1234.

At this moment, the only way to check the inventory part of the assembly item is when running the Build Assembly page.

You can print the components you need to build an assembly item. Please see the attached screenshot below for your reference.

When you build, QuickBooks automatically updates your stock of components. For the step-by-step process of building an assembly item, I'd recommend checking out this article: Track the products you manufacture. It also includes details about checking your stock and pending builds.

If you need to see inventory on hand and what's needed for building assembly or work order, you can pull up the Inventory Stock Status by Item report to print the quantity on hand of your assembly item. 

Here's how:

1. Go to the Reports menu.
2. Choose Inventory.
3. Select the Inventory Stock Status by Item report.
4. Set the report date.
5. Click the Print button.

Additionally, you can customize your inventory reports to focus on the details you needed the most. Check out this article to learn more about this: Customize reports in QuickBooks Desktop. It also provides details about setting preferences and scheduled reports.

Let me know if you have any other concerns related to building assembly in QuickBooks. The Community is always here to help you all the time.