The Trader page have also the Live Chat feature. The User can find it on the top left part of the page.
After clicking the Live Chat banner you will see in the bottom right corner the new window.
In there you can change the Department, write your Name and Email.
The Live Chat is built on the PHP Live tool. If you need more information about the functionality of the chat visit the PHP Live knowledge Base:
https://www.phplivesupport.com/knowledge_base.php