Org Level Settings
Within the org settings admins are able to add, edit or delete Azure policies using the Azure Management console.
From the console select the Azure org you wish to use. And define and edit your Azure policies on the org level to be applied on the part level (Azure policies).
Once your policies are defined you can apply them to your assignments on the part level.
Part Level Settings
Within the Part settings of a lab navigate to Lab Resources. Toggle "Cloud Labs", select Azure and open "Manage Policies".
From "Manage Policies" you can preview and select your policies to apply.