Operator is able to filter visitors by certain criteria (My chats, Queue, All chats, Website Visitors, All, Disconnected).
Default filter is all. It will show all active visitors on the website.
My chat will show operator's chat only.
Queue will show chat with no operators that wait operator's response.
All chat will show all chats on the website.
Website visitors will show visitors on the website without active chats in current moment.
Disconnected will enable expired sessions. After visitor left website session is kept for around 5-10 minutes.