I'm here to ensure you can successfully add Markup to your items in QuickBooks, CCCBuilder. Let's work together to get your Markup set up and running smoothly.

In QuickBooks Desktop (QBDT), Markup doesn't need to be enabled to appear in the item window. It will only be visible if the item type is set as Inventory.

Here's how:

1. Go to the Lists menu, and choose Item List.
2. Choose an inventory item.
   
3. Click Edit Markup.
   
4. Select the Type of Markup you want on the dropdown.
5. Add the Cost and Markup Amount.
6. Hit OK.
   

If you have any questions or encounter any difficulties along the way, feel free to add a comment below. I'll be more than happy to assist you and guide you through the process. Have a great day!