From the
Select the contact you want to have a conversation with, and click on the video call icon next to their name.
Right-click on the name of the contact you want to have a conversation with, and
select
A new window will open. When the connection is established, you will
see written, at the bottom of the window,
To close the conversation, click on
To turn a video conversation into an audio one, from the call window deselect