Symantec Endpoint Protection installation software uses Windows Installer (msi) 3.1 packages for installation and deployment. If you use the command line to deploy a package, you can customize the installation. You can use the standard Windows Installer parameters and the Symantec-specific features and properties.
To use the Windows Installer, elevated privileges are required. If you try the installation without elevated privileges, the installation may fail without notice. For the most up-to-date list of Symantec installation commands and parameters, see the Symantec Support Knowledge Base article, MSI command line reference for Symantec Endpoint Protection
Another way is by checking the above Document.
The last line of the above document gives you an example of the command line: