The whole installation is based on the simple copy & paste of the individual Chatwee code into your site.
First, you need to get a Chatwee code from the Control Panel after quick registration. Then, regarding to the type of your site, you have to choose the right installation method.
If you have a website with direct access to your HTML/JS markup you can just copy and paste the installation code on every page of your website (at the very BOTTOM, just above closing).
Many websites are built with Content Management Systems (CMS) such us WordPress or Joomla!, so the installation may be little more complex, but definitely easy as pie. Check the list of common CMS and web builders which Chatwee officially supports.
Appropriate instructions for each system are also available – just search the support forum.