How to create packages and programs without any customization.

I would like to create packages and programs using Powershell instead of the SCCM console.I have found out how to create packages and programs without any "customizations", but now I would like to suppress program notifications and run the program in hidden mode…
Is this possible to do that somehow?
I have searched everywhere without but doesn't got any result. I hope now someone here is able to help.
