Need The Code To Add 3rd Button To Home Page Slideshow for Vision Theme

[Ati-TPS]

We are using the Vision Theme and the default for each slide in the slideshow of the home page is two buttons. We need to add a third button to one of the slides, I've seen the code posted for other themes in these forums but wanted to know if anyone knows the code specific to the Vision theme for the slideshow.liquid file.

Thank you!