Simply download, install and activate the plugin.
Then you can use the following shortcode in your posts/pages or sidebar widgets:
[[ewichatlink class='css-button-class' href='/contact/' message='Hey, I need help with...'] Let's Chat [/ewichatlink]]
class – use this to style all or specific chatlinks (Optional, no default)
href – where should this link to if JS is disabled (Optional, defaults to ‘/contact’)
message – the pre-populated prompt to show in the new chat session (Optional, defaults to ‘Hey, I need help with…’)
And add the link title between the ewichatlink shortcode brackets. (Optional, defaults to “Let’s Chat”)