Two things: (1)editing the related products output on the page and (2)adding custom field to related product selection section in WP admin on individual products.
First part: I'd like to add the quantity box and add to cart button next to the price when related products are output on the single product template. Should I edit directly the helperfunctions.php or copy the function into my theme functions? In addition, I'd like to add a brief excerpt to each related product (more detail in next part of my question).
Second part: The client would like to add a brief excerpt to a related product that is specific to the product it is being related to. For example: say I'm editing Product A. I scroll down to related products custom section and choose Product B from the list. I'd like to add a custom field to include an excerpt for Product B that only displays on the Product A detail page. If Product B is also related to Product C, the excerpt that displays on the Product C detail page for Product B will be a different excerpt than the one on the Product A detail page. Does this make sense and is there a way to make this happen?
Thanks for your help,