# What is a call button? A call button is a smart button that allows your website visitors or customers to launch calls from your website or app, just with one click, referred to as 'Click To Call'. It's as simple as initiating a chat. The call button is only displayed to your customers according to the criteria that has been set previously: such as agent schedule, customers shopping cart etc. Each call button is highly customizable, and you can add personalized messages and install one call button on the same page, or create specific buttons for each page on your website. For example, you could create one call button for your homepage and another call button for your payment page: To install one call button on a specific page you need to copy its JavaScript and paste it on your website code. If you wish to install a call button on your app, you would need to use our SDK. If you need any further assistance please contact our Support Team via Live Chat or Watch our each step of our Quick Tutorial [HERE](https://www.youtube.com/@limecallgettingstarted) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.limecall.com/faqs/calls/what-is-a-call-button.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.