If you do not want to right away install the file, click the Near button. When you're All set to setup the file, double-click the file to start the installation wizard. Suggestion: If the thing is an error that claims the Microsoft Office installer.pkg cannot be opened as it is https://aarondefant.de/microsoft-office-2021-mac-standard-sofort-download-fur-eine-schnelle-und-einfache-installation/