Install 5 Windows User CALs

My Windows Server 2019 Datacenter edition is up and running; I just need five User CAL licences added to it. I already have the licence keys, so the task is purely the installation and confirmation that the server recognises all five CALs... (Budget: ₹600 - ₹1500 INR, Jobs: Microsoft, System Admin, System Administration, Technical Support, Windows Desktop, Windows Server)