Adding a call to action button on your Facebook business page is essential. Why? Because this button is made to provoke the user to take action - it’s the biggest button on your page, it’s located on the top of the page and it’s in a different colour.
Adding a “Start order” button is the easiest way to redirect people to your takeaway page.
Adding a button is easy.
First go to your facebook page and select + Add a button
Select what type of button to show.
In the end the button should look like this: