The Add Time/Costs can only be added to sales receipts and invoices, SBW.

I've got a workaround you may consider doing that let you do the tasks. You can customize your template and add the Cost column to it. Note that you'll have to calculate it manually and can only input the total cost, not the breakdown. Here's how:

1. From the Sales Order screen, click on Formatting.
2. Choose Customize Data Layout.
3. Click the Columns tab.
   
4. Ensure that the Cost box is check-marked.
5. Click OK.
   

I can see how relevant for you and your business to view all charges/costs for the customers. I suggest submitting feedback to our Product Development Team. They look through submitted suggestions for future updates and use them to develop changes for the product. Here's how:

1. Go to the Help menu at the top.
2. Select Send Feedback Online.
3. Click Product Suggestion. 
4. Click on the drop-down for Type of Feedback and select Product Suggestion.
5. Select the Product Area.
6. Enter your thoughts and suggestions.
7. Click Send Feedback.

You can also check these resources to learn more about job cost and customizing reports in QBDT:

•  Track job costs in QuickBooks Desktop.
•  Customize reports in QuickBooks Desktop.

You can always get back to us if you have additional concerns about managing customers/jobs in QuickBooks. We're happy to assist you.