Self Learning - Control Access to fields

Challenge 

Create a Permission Set to Handle Field Access

One of the requirements of our Recruiting app is that Hiring Managers can update job applications, but they can’t change the related candidate or position. Create a permission set that gives the correct access. 

• Review common issues.
• Get help on the challenges for this specific module.
• Create a permission set:
  • Label: Manage Job Applications
  • API Name: Manage_Job_Applications
  • Add a description (We won’t check for this.)
  • License: -None-
  • Enable Job Application Object Permissions: Read and Edit
  • Enable Job Application Field Permissions: Assigned users can view all fields and edit all fields, except they can’t edit Position and Candidate.

I can't see where the issue is, but I keep getting a response  

we cant find that the "Manage job applications" permission grant read access and edit access to all job applications fields, except access for Position and Candidate 

please assist