Shopify Site Development Work Needed

We are looking to get a modification made to our Categories page of our ecommerce furniture website. We have product that is "In Stock" and products that are "Out of Stock" displaying on our categories page. We want to display the "In stock" items first. We want to push the "out of stocks" to the bottom.

Then we also want to rank the "In Stock" items lowest price first to Highest price.