Using NopCommerce to sell admission tickets

Greetings from a newbie,

May I learn how was Denver Museum of Nature & Science able to customise NopCommerce to sell admission tickets:

https://secure1.dmns.org/products/4-museum-admission.aspx

Please advise.

Thanks and best regards,
C.A.

This was originally done in 2009 with a very old version. Try asking the developer

No reply from the developer. Yet.

Surely if it can be done in 2009 in an older version, the same can be done in 2017 in the latest version?

I think so.