Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
If you have a subscription with fewer features today, switching to Microsoft 365 Family is regarded an "upgrade" by Microsoft. You just order the 365 Family subscription and time from your existing subscription will be added to the new one. For details, see https://support.microsoft.com/en-us/accounts-billing/subscriptions/switch-between-microsoft-365-subscriptions .