Wait until the installer file SophosInstall is downloaded.
Go to your downloads folder. Wait for the Sophos Home Installer to finish downloading.
Navigate to your Downloads folder and click on the Sophos Installer (OR: double-click on SophosInstall. This shows the installer content, where you will find the Sophos Installer)
Step 3
Finalize instructions
Double-click on the Sophos Installer.app to start the installation.
When a security prompt appears, click on Open.
On the installation window, click Continue.
Provide your administrator account password for your Mac and click OK. (Not your Sophos Home password)
Wait for the installation to finish. This may take a few minutes.
[If this is the first time installing Sophos Home on this Mac, be sure to allow Sophos extensions if prompted.
You will see the Installation was successful once the installation is completed. Click Close to exit.