CmdID

CmdID / PowerShell / Cmdlets / Enable

Enable-App

Use the Enable-App cmdlet to enable (turn on) a specific app for a specific user. Exchange PowerShell reference

From the Exchange PowerShell reference 5 parameters Its page in the reference

Opens CmdID with your command, read as PowerShell. It is read in your browser and sent nowhere.

Parameters

5 in the Exchange PowerShell reference
-IdentityThe Identity parameter specifies the GUID of the app.
-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.
-DomainControllerThe DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory.
-MailboxThe Mailbox parameter specifies the mailbox.
-WhatIf, -wiThe WhatIf switch shows what the command does without making any changes.