Limited Express Train to Suzuka Circuit?

How does one purchase online a JR Limited Express train ticket from Nagoya to Suzuka Circuit Ino in advance for Grand Prix weekend?

At JR ticket offices and machines across Japan.

Uji Thnaks for the reply. Is there a way to purchase the tickets online prior to arriving in Japan?

To be honest: I am not sure. Because it is operated by JR Central, whic does not have its own online reservation system for limited express trains, and because it is a temporary train, I doubt that it is possible for non-residents. You should try the JR East and JR West reservation websites and see yourself, but note that actual tickets need to be picked up before use and each system comes with a limited pick-up area, that does not include Nagoya, I think:
https://www.eki-net.com/en/jreast-train-reservation/Top/Index
https://www.westjr.co.jp/global/en/ticket/overview/

You could also try to use one of these newly emerging services that buy tickets for you at a big surcharge.