Add Flexibility to Your Permission Set Group with Muted Permissions (Pilot)
Where: This change applies to Lightning Experience in Enterprise, Performance, Unlimited, and Developer editions.
Who: If you’re an ISV partner, to fully benefit from the pilot, enlist subscriber customers to participate. Using permission set groups along with a subscriber org lets you move through a full cycle on a branched version of a managed package. If you participate in the pilot without a subscriber org, the feature is limited to Developer edition orgs and your test environment.
Why: You have a permission set group called Sales Staff Users that contains three permission sets. One set contains a delete permission that you no longer want all group members to have. However, another permission set group called Managers also references this permission set.Instead of creating another permission set, use a muting permission set. The muting permission set contains the delete permission that you want to disable. When you add the muting permission set to the Sales Staff Users group, those members no longer have the delete permission, but the Managers members do. You can add only one muting permission set to a permission set group.