Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Dear respected Oilers_tech,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
As per your description, we recommend installing Office LTSC Professional Plus 2021 and using a traditional activation method such as Key Management Service (KMS).
For Volume License, here is article for your reference. Activate volume licensed versions of Office by using MAK
Appreciate your patience and understanding and thank you for your time and cooperation.
Sincerely,
Waqas Muhammad