Report on Custom Permission Set and Permission Set Group Assignments
To help you manage your users, create a custom report type and build reports on custom permission set and permission set group assignments. See all users assigned to a specific custom permission set or permission set group. Or, use the report to review an individual user’s assignments. We delivered this feature thanks to your ideas on IdeaExchange.
Where: This change applies to Lightning Experience and Salesforce Classic in Essentials, Professional, Enterprise, Performance, Unlimited, and Developer editions.
How: From Setup, in the Quick Find box, enter Report Types, and then select Report Types. Select Permission Set Assignment as the primary object. After you deploy the custom report type, users can select it when building reports.