1. Identify the permission that requires the permission set license you want toremove.
2. Make sure that permission isn’t assigned to the user through a permission set. Youcan do that in one of these ways.Remove the permission from the permission sets assigned to the userRemove the permissionset from the user’s assigned permission sets
3. Remove the permission from the permission sets assigned to the user
4. Remove the permissionset from the user’s assigned permission sets
5. From Setup, enter Users in the QuickFind box, then select Users.
6. Click the name of the user whose permission set license you want to remove.
7. In the Permission Set License Assignments related list, clickDel next to the permission set license that you want toremove, and then click OK.