You can create a markup item to add to your estimates, daniel-aec-inc-u.

Here's how:

1. Go to the +New button.
2. Select Estimates under Customers.
3. In the Product/Service column, click Add New.
4. Set up the item. Once done creating an item for markup, click Save and Close.
5. Enter the markup amount and other details for this transaction.
6. Click Save.

That's it. Keep me posted if there's anything else you need.