Buttons (and link) of Featured Slider

Hi, I installed the free Theme. I linked the slider to 3 pages. They 3 different sliders show on the front of the site the title and a text of the page. But only one shows a button. The text of that button I can not change and I do not see where I can put a link. Where can I change that, and where can I add the buttons (and links) of the other two pages? Thanks.