In Exchange you will get the requests now and again to grants rights to users calendar, based on the situation it can be a PA to a Director or a colleague needing access to another ones calendar.

To grant the rights, you can run the following command:

  • Add-MailboxFolderPermission -Identity\calendar -User -AccessRights AvailabilityOnly

In this example we granted Availability rights but you can grant Full Access or Reviewer rights.

In larger environments, it does take a while to replicate the changes.

Hope it helps.