https://intunedrivemapping.azurewebsites.net/DriveMapping
Important to note - Ensure any users who need access to the network drives, to log in the PC with Password and not PIN. This is so it can authenticate correctly with the domain as PIN is not supported on ours.
First check what mappings they should have on AD, e.g. mappingA, Mapping M etc.
Navigate to Scripts in Intune and check which one the user will need. Each Script will have its own group you add the user to e.g. M Drive Mappings > Group Intune_MappingsM
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Add the user to group below
Sync on their PC and ensure connected to the VPN