You can add up to three 'Call to Action' buttons to a basic page include by doing the following:

• Go to the include basic page (for example if your include page is 'my_include_page' then this the page you need to edit).
• Add a tag with the structure 'button [1,2or 3]:[slug or url to link to]'. So if I want to add button 1 to the include linking to a page with the slug 'about_us' the tag would be 'button 1:about_us'.
• Save the page.

By default the button label will read 'Find out more' but you can change the label by appending '**' followed by the desired label to the tag. So for example, if I want my button to read 'About us' then the tag would be 'button 1:about_us**About us'.

Below is an image showing a basic include with all three buttons added: