Hello @SK84 ,
Welcome to the MS Q&A forum.
I don't see any issues why you can't create the separate login for the second user and allow him to login to the VM. As example, just share the public ip address of the VM and use the RDP client to connect from your local machine.
Public article for reference:
https://learn.microsoft.com/en-us/azure/virtual-machines/windows/connect-logon
PS: Just keep in mind there is the limit imposed by Windows Server on remote administration, you can only have 2 administrators connecting to a server to manage it at once.
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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Sincerely,
Olga O