Ask confirm to authenticate in application if user already signed in into keycloak


If user already signed in into keycloak, if he want to authenticate in app, he click at login element, immediately redirects to keycloak, and redirects back into app to finish authenticate.

But I want to do this: after user clicked on login element, it redirects to keycloak. But auto redirect not occurs, instead keycloak asks to authenticate in application. If user confirm, then keycloak redirects to app.

How to do it in simplest way?