Just upgraded to QuickBooks Pro online for the inventory support but I don't see the ability to create assemblies of items I have to create our finished product we sell?

I highly appreciate you for providing detailed information on your concern, @info-karnageweld.

Having the option to create assemblies in QuickBooks Online (QBO) isn't possible. However, you can explore a third-party app that tracks the quantity of the item created into an assembly item.

You can directly visit our QuickBooks App Store or go through the Apps menu in your QBO account.

Here's a quick guide on how:

1. On the left navigational panel, select the Apps tab. 
2. Go to the Find apps tab.
   
3. From the search bar, type in the keyword to look for an app.
   
4. Once done, you can choose an app from the lists that suits your business needs.

While this is not an option in QBO, you can use Bundles as a workaround. A bundle is a group of items you sell and track in QuickBooks. I'd be glad to show you how:

1. Sign in to your QuickBooks Online company.
2. On the upper right corner, look for the Gear icon.
3. Select Products and services.
4. Tap New, then choose Bundle.
5. From there, you can input the necessary details.
6. Switch to the Products/services included in the bundle section, then add the necessary product/service from there.
7. Once done, click on Save and close.

For more information, check this out: Add product and service items to QuickBooks Online.

Additionally, I'll be sharing these resources that'll help you track your inventories and change its item types in QBO:

• Use reports to see your sales and inventory status in QuickBooks Online
• Change product and service item types in QuickBooks Online

Let me know if there's anything else that you need help with your assemblies. I'll ensure to provide the best help so you can keep your business going.

@info-karnageweld 

You will need an inventory management app with the assembly feature or a manufacturing app to integrate with QBO. Otherwise, you should consider switching back to QB Desktop Premier or Enterprise.