Have images on a gallery slide automatically on Squarespace 7.1

Hello all!

1. I will like having the 3 images of my homepage sliding automatically (every 3-4 secs), is there any code for adding this functionality.

2. I will like to add some type of pagination; 1/3 at the bottom of each image. Something subtle

3. Lastly I will like to add some arrow navigation on desktop, ideally that I can style them

Thanks so much in advance!

#1. You can use Gallery Section Slideshow

#3. You can enable Arrow Navigation