Hi Nilley,
a colleague had been successful about 3 years ago via standby list
he told them that he would be able to fill any gap of applicants for the interview within 24 h. That means readiness: Test at any time call!
Useful for EK (if short-term cancallations and postponements) and useful for him because he got the interview place (and the job!).
Have a nice week,
Berny