Please guide us to deploy MSI software through Symantec Network Access control.
Check this artical and attache PDF.
Thanks In Advance
SEPM Knowledgebase Documents
This is normally done through the "Custom Script" option within the Host Integrity Policies.
I'd recommend you take a look at some of the existing templates created by Symantec, as several of them (e.g. the "Altiris Software update agent is installed" template) show you how to check if a piece of software is installed, then download and install it if not present.