Locate the settings icon and click it.

On the next page, under Scheduling click Job Estimation and work items.

Under the Work items title, you'll see the Add work item button, click it and a new item will appear on top of the list.

Update the new item name and on the cost part, you can put the price for the work item.

For example:

Using the icon present at the left part of each work item, you can rearrange the order of your work items list.

Once you finish, make sure to click the Save Changes button at the end of the page.

Work items can either be added on the job estimation and work items page or when you add a new one on your booking form.

If you use the "Automatically Estimate Amount Owed" on an appointment, this will also take into consideration work items and their prices.