Aug 23 2019 09:53 PM
Priority messages make it possible to alert the receivers (1:1, group or meeting chat) for 20 minutes, every 2 minutes - or until they read the message. It is a way to gain someone's attention.
I wrote a blog post about good and bad uses for Urgent/Priority messages beyond obvious ones in healthcare.
https://myteamsday.com/2019/08/20/avoid-priority-messages-misuse/