Placement of `Layer.setConfigProvider` in a live pipeline

Using

Layer.setConfigProvider(ConfigProvider.fromJson([...]

Layer.setConfigProvider(ConfigProvider.fromJson([...]

what's the correct place to put it in if I've got a live piping the different layers? At the top or at the bottom of that pipe? Is it then with

Layer.provideMerge

Layer.provideMerge

Placement of `Layer.setConfigProvider` in a live pipeline - Effect Community