I want to be able to filter by multiple categories on the frontend.
For example, this will return all posts within the 'football' category:
But i also want to be able to return all posts within the 'football' AND 'wigan' category. How can i achieve this?
I thought it might be possible to do the following, but it doesn't work - it returns a 404:
My permalinks are set up like this (which is a custom structure):
Thanks for the help!