From the Desktop Application:
Click on the new message icon to start a new 1:1 or group conversation.
2) Enter the names of the members that you'd like to talk to.
3) Once you've finished adding members to the new conversation, type a message into the message bar at the bottom of the screen to begin the conversation.
4) Go to group settings to give the group a name.
From a Mobile Device:
Select the new message icon to start a new 1:1 or group conversation.
For a 1:1 conversation, input the recipient's name and type your message.
To create a new group, select New Group.
Input a group name and add the desired participants.
Select Create and start collaborating with your team!