If you don't have a key yet, you can still access the software legally: Multi-User Desktop License Installation Guide - Minitab 1 Dec 2020 —
Need to ensure the post is clear and adheres to community guidelines against piracy. Avoid any misleading information. Use clear language and helpful links to official resources. Check for any outdated info, maybe Minitab 19 is no longer in production, but the user might still need activation keys for existing licenses. minitab 19 product key list