The header switcher only offered provider and model, so catalog efforts a brand-new Session could inherit were reachable solely by typing effort into the Eval and Execution forms. Rows whose catalog entry advertises efforts now expand a second tier — the model default plus each effort, with descriptions and a check on the route in effect — the switch validates the effort against the catalog, treats an effort-only change as a real switch, and forwards the branded id to selectModel. Docs name the re-pointing that dee76b1 added.