• Connect to your webserver via the FTP program of your choice, and navigate to whmcs/template/X, where X is the name of the theme that you are using in WHMCS.
  
• Find the file  footer.tpl  and click on it.
  
• From the left side of your  cPanel  click on  Edit File  or  Edit File with Code Editor  option.
  
• At the bottom of the page right above the tag put: {literal} paste your  Zoho SalesIQ live chat widget code  between these tags! {/literal} 
  
  

  When adding JavaScript to a WHMCS site, you need to add these {literal} {/literal} tags before and after the JavaScript.
  
• Click  Save changes  (upper right corner of page.)
  
• Exit  from cPanel.
  

To get the Zoho SalesIQ chat widget code snippet

• Login to your Zoho SalesIQ Operator console.
  
• Navigate to  Settings -> Websites , click on the name of the website you are attempting to include in a page.
  
• Select  Live Chat . In the  Installation  section, click  Copy this code  to copy the code snippet.
  

To receive live chat notifications, you should be logged in to Zoho SalesIQ ( https://www.zoho.com/salesiq/ ).