Yes, you can use Comm100 Live Chat on multiple websites simultaneously with one account. All you need to do is copying the code and then pasting it onto these websites.
With Comm100 Live Chat, you can put the same style chat button on your multiple websites by installing the same live chat code, or place difference style chat buttons on different websites using different live chat codes.
To have different style chat buttons, you need to enable the Multiple Campaigns feature. This feature allows you to create a dedicated live chat for each of your websites, which means you can customize each campaign according to every of your website style. For how to enable Multiple Campaigns and install different style chat buttons, please click here to check out the step by step instructions in another knowledgebase article.
After you add the live chat to all your websites, you can tell from which website a visitor comes by viewing the Current Page column or the Campaigns column in Agent Console.