Chat
You can start one-on-one chat or the group
chat in the same way selecting the chat “New Chat” option. The user can chat to
any of the user in a group or one-on-one chat without any interruption with the
group call or the meeting.
Here "Allan" is the internal user thus I am no longer required to type the full email address but in case of external user you need to type the full email address.
Select the appropriate user or enter the full email address and start your message by clicking on the field “Type a new message”.
Soon after you click on the “Type a new message field” You can now chat and can perform audio/video call.
Group Chat