ePO isn't really designed for that kind of thing afaik - sorry.
Still, perhaps some users know of funky ways of working around that but I suspect it would be hard work. It's certainly not in the main product design brief.
EPO 3.X used to be able to do this sort of thing, but EPO 4.X is well locked down (and for good security reasons).
There are still some ways around it, but these are limited and difficult. For example, a trusted application is a McAfee Installation Designed VSE install. It can run other programs as part of the install ... so Yeah its possible. But no, it's not easily workable.