Set redirect-url once session timed-out

How one can set redirect-url for session time-out in Keycloak admin console.

Use case:
I set session-timeout by 30 mins in keycloak admin consoled.
When I visited my app then it redirected to keycloak login page, here i am waiting for 30 mins and session gets timed out.

In this case I want keycloak should promt me that session time out or it should redirect me to particualr redirect-url.

Kindly suggest me for same as I am new for keycloak.

The Keycloak admin console even works same as this situation.