Problem Statement

I have reread the documentation, searched through a bunch of Issues and still don't understand. Is it possible to add several models for Openrouter with the possibility to choose between them directly in the interface. It seems to be such an obvious functionality that it should be out of the box, but I still don't get it.
Can you please tell me if this is possible, and if so, how?

Feature Idea

Possibility to select a model for the Openrouter provider directly in the chat room