All three divisions · subscribe once, updates automatically
iPhone: tap iPhone next to your team and confirm.
Android: tap Android, it opens Google Calendar and asks you to confirm. If it refuses on mobile, do it once in a desktop browser and it syncs to your phone.
These are subscriptions, not one-off imports. This means that if a match gets rearranged or cancelled, your calendar corrects itself. Refresh isn't instant (Google can sometimes take up to a day) so always check the group chat for last-minute changes.
If the buttons do not work, make sure to press the 3 dots in the top right of your screen and press "open in external browser".