How do i add EGS as a platform to support for my Steam game?

I have a single player game that is setup to work on Steam with all the steamworks stuff setup and working fine. I want to now make the game work on the Epic Games store. I am going through the documentation on the Online Subsyatem for EOS plugin here Online Subsystem EOS Plugin in Unreal Engine | Unreal Engine 5.8 Documentation | Epic Developer Community

I am a little confused how, once all the settings are setup in the plugin how I will be able to make builds for Steam vs builds for EGS. Does anyone know what is the right way of setting that up?

I am using UE5.6.