How to set up debugger for the service project?

I have a Windows service project whose executable is
ProcessController.exe. It depends on both Distribution.dll and
Core.dll while Distribution.dll also depends on the Core.dll.

I want to debug into both Distribution.dll and Core.dll when certain
events happen. Any advice on how to set up the debugger?

I also have a Console.exe that is dependent on Core.dll. I'll need to
use Console.exe to initiate and monitor events in order to debug both
Distribution.dll and Core.dll.

Any advice on how to set up debugging environment? Thanks!