Ecommerce Gem .main-slider button

Hello Guys,

I just want to know how can I edit the slider.
What I need is to show the button in one of the three sliders and hide it in the other two.

Also, there is a form to manipulate de margins?
I want to use personalized banners and adjust the button below the text of the image.

I hope you can help me, please!

Regards