Ministry of being the thermometer

Excited.
Engaged.
Bored.
Spaced out.

Anyone who's at the front of a group, no matter what context, if they want to serve those they are communicating with well, must be a good thermometer.

Every speaker, presenter, host, chairperson & MC must be able to gauge the mood of the room and, if need be, change things up in order to keep connected with their audience.

This is a must when dealing with children and youth.
This is essential when leading a bible study.
This is vital when preaching.
This would serve your people tremendously well during a church service.

Every leader needs to hone their antenna of room discernment, or employ someone else who'll give them a helpful nudge, or their level of engagement/buy-in from the group will always be reduced.