The following is general view for the Labels
This is how it looks like
How to connect to AIP module
This is how you classify the PDF
PowerShell for Azure Portal Admin tasks
Install the module
Gets the Azure Information Protection label and protection information for a specified file or files.
The following command to view the file status
The following is how you get the label ID
Set-AIPFileLabel(you will need the label ID)
Sets or removes an Azure Information Protection label for a file, and sets the protection according to the label configuration.
The following is the permissions for labels