'Request Responses' toggled off but still asking for responses

Hi all - we put a lot of events into our Outlook calendar, for which we do not want a response. They are to remind the business that they are happening. In old Outlook, we just toggled off 'request responses', and then the notification went into people's inboxes, but they could delete it, and the event would appear in their calendar. This feature to toggle off responses is still there in Outlook BUT when the notification arrives in people's inbox, it is still requesting responses - although if they do respond, the sender does not get a notification of how they responded. BUT this isn't what we want!! We do not want to waste everyone's time answering yes or no to events that are just advisory. Why is this not working properly??!