Button Flow - Send Notifications to specific users
We are having a staff meeting and I would like to create a Flow button that would allow me to send a message to attendees. I would like to customize the messages prior to sending. So, for example, one morning I would like to send a notification that might say "Breakfast will be served in 5 minutes in Room 5" .
And later that day, I'd want to send another saying, "Be sure to grab a snack in the meeting lobby."
Is this possible? And, if so, any references or direction would be appreciated.