You can customize a service code fee at the client level. Here's how:
1. Navigate to the Client you want to edit.
2. Click on Edit Details.
3. Click on the Billing and Insurance tab.
4. Scroll to the section that says Client's Default Service and select a code from the dropdown.
5. Edit the service code fee by clicking on the box with the dollar amount.
6. Click Save.
Now, the fee will be included every time you create an appointment for this client with that service code.
Note: Keep in mind that updating the fee here doesn't update any past appointments or invoices.