With this, you can now broadcast messages remotely to all the enrolled macOS devices. The broadcasted message can also be viewed from the Hexnode portal, under the Action history sub-tab of an enrolled device.
Here is how you can do this:
Navigate to Manage > Devices > select the device.
From Actions, choose Broadcast message.
Type in a message and click on Send.
Ensure to grant the Notification permissions for the Hexnode MDM app, if prompted, to receive the messages sent by the admin.