As you have found out, there is no section named pyCaseAssets in Pega 7.3. The name of the section you should be looking for is pyCaseMainInner. In addition, you will note the exercise has you modify the section however when you open the section you will notice it uses the new template layout which will make moving the Case Participants up on the right hand panel very easy.
I have submitted this defect to the Pega Academy team and it is currently on their backlog.
Please let me know if this resolves your issue,
Pega Academy Self-Study Support Team
Posted: 2 years ago
Posted: 30 Jan 2019 9:18 EST
Martin van der Vorst (Martinv3600)
Senior System Architect and Integration consultant