Group Messaging is Moodle feature available from Moodle 3.6 onwards.
A teacher or user with the capability moodle/course:creategroupconversations can enable group messaging when setting up a course group.
The group will then appear in the group messaging section of the messaging drawer.
When a group is created within a course, Group messaging can be turned on which will allow the group members to interact with each other.
Click the link below for instructions on "How to create Groups"
To turn on Group Messaging within a Group
Step 1. Enter the relevant course
Step 2. Click the cog on the right-hand side
Step 3. Click More
Step 4. Click Users
Step 5. Click Groups
Step 6. Select the group for which you want to turn on the messaging feature
Step 7. Click Edit group settings
Step 8. Select “Yes” from the Group messaging drop-down list box
Step 9. Click “Save Changes”
Step 10. When the group members login, they will now be able to chant within their group using the Moodle messaging feature