Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
O365 is a subscription licence usually paid annually, but it could be monthly
Are the other devices Laptops/PC's and your own devices or members of your Family?
If your own devices on the other PC you install O365 via the MS account
And if Family you send them the sharing link for them to install O365
The lifetime version is O2021