Posting a message in a Conversation from the Flow bot should be able to tag users, or the entire team, using @
I am currently using MS Flow to post a message to teams when a MS Form is submitted and subsequently approved. People in my organisation have been complaining that they don't know when a form is submitted so it would make sense that the Flow Bot posting the message to Teams could tag the entire team or the individuals who would need to pay attention to it.
I've read things about using BBCode and the Bot Creator SDK but these aren't viable as I don't have a Visual Studio license. The simplest solution would be one that works within Flow.
you can tag a person but not the channel. Use <at></at>