How do I move Controls and Captions on a Slideshow Gallery?

Site URL: https://oriole-buffalo-2d5z.squarespace.com/home-2

Hi, I'm trying to move the arrow controls and captions of my slideshow gallery (section 3) 

Here's my site URL: https://oriole-buffalo-2d5z.squarespace.com/home-2 (password: inda)

Any suggestions on how to:

1) move the slideshow control arrows to the upper right corner?

2) increase the weight and size of the arrows?

3) move the captions to the upper left corner and change the font family and size? 

ps. I dont' want to use a summary block unless there's a way to link the images to other pages on my website. Then I'm open to it. 

This is what I'm hoping to end up with in the end:

Hi. The url doesn't exist. Can you check again?