[Plugin: Slideshow] Buttons activated but in wrong position

I chose to activate the buttons (next/previous) to allow visitor to scroll as well. However, my slideshow is larger than the default size, and the buttons did not adjust to fit, so they are appearing somewhere in the middle of my slides. How do I set the positioning of the left and right arrow buttons?

And thanks for the script.

https://www.ads-software.com/extend/plugins/slideshow-jquery-image-gallery/