I'm creating a site which has a products section.
I have created an entries section called 'Products'.
I have set up some categories, i.e. 'Category One, 'Category Two', 'Category Three'
I have also created a related entries field so I can related products to each other.
When the client adds a new product in 'Category One', they should only be able to relate entries that are in 'Category Two' or 'Category Three'.
Is there a way that I can restrict the results returned in an entries field in the Control Panel to a specific category?