Office365 Deployment
Deploy using the OfficeDeploymentTool
Sensitivity Labels
sensitivity labels are used in outlook and other applications to set access and to conform with compliance for data retention.
For the labels to be accessed in outlook the labels need to be published in the the compliance center in the O365 portal - see this MS documentation for details https://docs.microsoft.com/en-gb/microsoft-365/compliance/create-sensitivity-labels?view=o365-worldwide