You can sort your B2B products by: Newest First, Oldest First, A-Z, or Z-A. To do this, go to your B2B eCommerce > Dashboard > click on Visit your B2B Store > select how you would like to sort the products with the 'Sort by..' dropdown menu.
Please note this is done at the individual user level. Apart from the four options mentioned above, there aren't any other Sort By options at this time.