MacOS 15.2 Calendar ... how to get rid of this invitations / notifications?

Hi, I'm sharing a few iCloud calendars. I'm the owner of the calendar. I turned of notifications (as far as I know), but I can't get rid of the invitations / notifications shown in the screenshot... those appear every time a new event is created or changed. There are lots of changes in this calendar during the week and those notifications on my Mac are really annoying. Any ideas how to get rid of them? https://preview.redd.it/n8v4br5xeqfe1.png?width=498&format=png&auto=webp&s=7bcafadb3a278db6936fb15c32818f9cac1b165c