A Help Desk Software wouldn't be complete without Department Routing functionality.
Department Routing is a function of live chat to route to a particular department in a company.
 
Here are some examples: 

1. A visitor is on website1 requesting a chat session which automatically routed to the operator servicing website1 
2. A chat session started in the support section of your website is to be assigned(routed) to the operators in the support department. 
3. A pre-chat window asks a customer to select a department to connect to. Based on customer's selection a chat session is routed to the appropriate department (you can configure Pre-Chat department routing by clicking on "Account Setup"->"Graphical Setup"->"Pre-chat window")

If your account services multiple websites or your website is sectioned by department you can apply department information to your visitors without using pre-chat screen:
 
In Admin Panel of your account click on "Account Setup"->"Departments" menu. On this screen you can setup all departments which will be able to chat with your customers.
After departments are setup please record the Dep # for each department in your company.
Find the following parameter in LiveHelpNow code installed on your site "d=0"
Replace 0 with Dep # which should serve this particular live chat button installation on your website. So if you are installing LiveHelpNow Live Chat button in a Billing section of your website you would replace 0 with Department ID of the Billing Department as setup on your account. After this is done all customers visiting Billing section of your website will be placed in a Billing department operators' queue and should customer request a chat session it will be routed directly to the support department operators.
For proper use of Department Routing feature of LiveHelpNow Help Desk Software all operators under your account should set their "View" to "My Department Only" in the main operator panel. 
 
It is important to note that LiveHelpNow is also capable of enabling Department drop down list in Pre-Chat window to allow visitors to select a department to talk to. LiveHelpNow specialist can help you set this functionality up for your account free of charge.