Install Programs based on User Input

I'm just starting to get my feet wet in PowerShell. I'm working on a powershell script that simplifies an install for another department. 

At one point in the script I need to install one or more variations of a program based on the technicians input. We'll say for simplicity sake that the EXEs are in \\server1\program\ver1, \\server1\program\ver2, etc. Some people only need one of these programs, some need up to 3 of them. Each one is currently right-clicked and then run as administrator as well. 

What would be the best way to handle this?

The rest of the setup process I think I can figure out. I need to translate them from manual steps like copy files, setting permissions, etc. to powershell. 

Thanks,

John