I see you already have this setting, but this is very basic sorting, the products are mixed up and it is not able to rearrange them. Furthermore, each restaurant has about 100 dishes but only a few 5-10 dishes are their speciality and the owner wants to place these on top of the list. The products also need to be grouped by category in the list, not that noodle dish 1 at top, noodle dish 2 in the middle, and noodle dish 3 at the end of the list.
Since woocommerce already has this custom sorting/arranging built in, restrofood just needs an option to use this sorting rule from woocommerce. I hope you can implement this possibility in the near update. Thanks.