For the additional instructions and other installation methods, refer to the article on WFBSS 6.7 Server Help: Security Agent Installation Methods.
Ensure that the 'WFBS-SVC_Agent_Installer.pkg' and 'ist' files are in the same folder before proceeding with the installation.
For all users who will perform Mac agent installation, regardless of the macOS version, download and extract the ZIP file to obtain the full Security Agent installer package.