There are three types of chat button you can pick up: Adaptive, Image Button and Text Link.
A chat button of the Text Link type shows as a text hyperlink on your web pages. Your website visitors can click the text link to initiate a chat with you.
If you want to use the text link for a new website, you can enable the Multiple Campaigns feature and create a new chat button of Text Link.
Click Installation, select the text link campaign you created, copy the code and paste it onto your site without any changes.
Note: Even after pasting the code onto your website, you can still customize the live chat style.