I purchased a Windows 10 pro upgrade on my microsoft account. I want to install the upgrade on another one of my computers. How do I install that up

[Win 10 Pro Upgrade]

So I have a couple Windows 10 home computers that I want to upgrade to 10 Pro. I purchased 2 digital upgrades using my Microsoft email address and installed 1 of the upgrades. How do initiate the upgrade on the second computer without going through Windows store and selecting purchase? I should be able to install the upgrade on the second computer just by logging in to my Microsoft account. Please advise.

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