Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Which type of subscription do you have? To install the Office apps locally on a Windows or Mac computer, you'll need MS 365 Personal, MS 365 Family or MS 365 Premium. All of these subscriptions will let you install on multiple devices for at least one user. Family and Premium will also let you invite other users to share the subscription (and install on multiple devices that belong to them).