Easiest way to do this for me was through the official club app. It's actually been replaced in the app store with a generic EFL iFollow app (you don't need to be an iFollow subscriber to get it) – then you select your club. Instructions in there were easy to follow and apparently it's a "subscribed" calendar, meaning they can edit it when changes happen and they'll autoupdate in your cal.
https://apps.apple.com/gb/app/efl-ifollow/id1517867717 (bad reviews! But the calendar thing works fine for me)