How to integrate WHMCS login screen on wordpress admin backend

I downloaded and installed the plugin. I cant figure out how to make it so when the user logins they can login to WHMCS through the wordpress backend. The only way I see to do this is by adding the short codes to a page and having the user go to the front end of the website and logging in my WHMCS panel. I think the plugin is more geared towards integrating WHMCS on the front end of a wordpress site. I am trying to integrate it so when clients login they can click a menu tab and in the backend it will bring them to the login screen and they can login through the wordpress admin dashboard. This will be useful for them creating support tickets or updating billing without redirecting them away from their dashboard. Can you tell me how I can accomplish this?