How to Enable Enhanced Permission Set Component Views in Salesforce?

When you have large numbers of Apex class assignments for permission sets, enable a paginated result set, standard filtering, and sorting to work more efficiently.

1. From Setup, enter User in the Quick Find box, then select User Management Settings.
2. Enable Enhanced Permission Set Component Views.
   Select a permission set and then select Apex Class Access and click Edit. If you have many classes assigned to the permission set, select the number of items per page to view. Also use arrows to scroll through pages.