How publisher-subscriber configurations can be included in a single app.config?

Question

I am writing a simple server (publisher) and client (subscriber) application to imagine inter-process communication between two managed C# processes.

I need to write a server (that's working as a publisher) that will publish the contents to the subscriber on the basis of its subscriptions and client (subscriber). For this I have to write two seperate configuration files (app.config) on both the publisher's and subscriber's end.

It's creating a problem. When the publisher wants to publish the data, it starts the process (client which is working as subscriber) with Process.Start statement. On start, the client process is unable to initialize remoting because it loads app.config which is being used on the server side, where it didn't find its own configurations (subscriber's configurations).

I need to write both subscriber and publisher configuration on a single app.config file.

How do I go about doing this?