How on EARTH would I do this?

My Goal - (Just for context, so you understand why I need this.)

My goal is to create GUI, which has multiple settings within it.

The user can then build an .exe file by clickin on a "Build" button which will be on my GUI. The built .exe will then have the same settings as customized via the GUI.

My Question/The Problem/Where I'm Stuck.

If this .exe file is sent to another PC, and executed from it, how do I make it send a signal back to the user with the GUI?

Notifying that the .exe file has been executed.

I understand this is done by importing specific processes, and maybe using ports etc.

But I'm not sure & could use some help.

Regards,

Jack.

(I know it sounds like remote administrative software but I'm in fact trying to set up some auto tasking macro's in my LAN)