I'll ensure that your customer can only see the total cost when receiving the invoice, @gwnova. Help has arrived. 

Hopefully, you're having a great day today. I'm happy to provide methods on how to split two items in the invoice in your QuickBooks Desktop.

Let's create a specific template for this transaction so your customer will only see the total. Follow the steps below: 

1. Go to the List menu, then choose Template. 
2. Press Ctrl + N and click Additional Customization on the button part. 
3. Select Footer and check only the Total box. 
4. Check the Only show Total on the last page box in the Print section. 
5. Click OK. 

For more details, see this link:  Use and customize form templates.

After that, you'll need to create a group item. Ensure that the Print items in group box is unchecked. This way, the customer will only see the total in the sales form. 

1. Go to the List menu, then choose Item list. 
2. Press Ctrl + N and pick Group as a transaction type.
3. Enter a Group Name in the field. 
4. Add the labor and material cost under the Item section. 
5. Make sure the Print items in group is not selected.
6. Click OK.

For more information, check out this article: Add and edit multiple customers, vendors, and items.

Once done, let's create a sample invoice to see how it looks like. Let me show you how: 

1. Go to the Customers menu and select Create invoice. 
2. Pick the customer name in the field. 
3. Choose the invoice template you previously created in the drop-down.
4. Select the group item in the field and complete the needed details. 
5. Click the Print button, then Preview to see how the form looks like. 

Additionally, visit these articles below to help you manage your customer invoices, payments, statements, sales forms, and other related matters: 

• Sales and customers
• Email sales forms, invoices, and statements in QuickBooks Desktop

If you need help with other processes, please feel free to mention my name in the comment section below. I'm always here to work with you again. Keep safe, gwnova.