Upgrade a license
Upgrading a license is straightforward through the Microsoft 365 admin center. Administrators can select users and upgrade their licenses to higher-tier plans that offer more features and capabilities. For example, upgrading from Microsoft 365 Business Standard to Business Premium adds advanced security and device management features.
See Upgrade or change to a different Microsoft 365 for business plan at https://learn.microsoft.com/en-us/microsoft-365/commerce/subscriptions/upgrade-to-different-plan for more information.