Add Categories To "on Sale" Page

Multi-Vendor Questions
1

Hi,

Is there a way to add categories to the "On Sale" page? When you go to the on sale page, the products are listed in a random order. Is there a way to categorize or only show products under a certain category? Or filter the products?

2

Is there a way to categorize or only show products under a certain category?

Try to add &cid=123 parameter to the URL

where 123 - ID of the required category