How to change settings every time I create settings

I developed a wpf application for the client and I do not want to give the source code. Since the client wants to change the logo and several links in the application for his different set of users, how can I give him the opportunity to create settings with different settings each time?

I was thinking of providing a folder for debugging so that it could modify exe.config and create a setting using the Inno installation. is this the right way or can you send me another solution?

Thanks Venkz