Hi
ks347,
I just wanted to confirm that what Pablo (@pabpinor) has mentioned still applies even in this COVID-19 situation, and that the only difference is that now interviews are conducted online (e.g. via Skype).
Basically, a few days after receiving your interview invitation, you'll be given the names and contact info of two alumni, and a deadline to complete both interviews. It is your responsibility to reach out to both of them and arrange an interview before the deadline. Please, keep in mind that both alumni are volunteers and do this as a way to give back to the school, i.e. it's not their job, therefore it is common that they don't reply immediately to you and that they prefer scheduling the interviews closer to the deadline. But in any case, the date of your interview has no impact on the school's final decision.
I hope this helps and good luck!
Warm regards
Alex