Configuration for sales order processing for customer projects (professional services) belongs to the sales component and outside of the scope of this course.
Please refer to Sales Courses Sales in S/4HANA Cloud, public edition | SAP Learning for detailed information.
You can also review Unit 4 - Understanding Customer Project Management for information on how the sales order is created during the customer project setup, and Unit 5 - Completing Project Billing for Professional Services for details on Project Billing and material determination for billing.