I have a WP site that has multiple categories and subcategories. Some categories are States and some categories are Amenities. The categories cross reference one another, meaning that each post has a State category and is list in the Amenties categories. I am trying to create a form with 2 drop down boxes, 1 for the States and 1 for the Amenities. The search results would return the posts that meet both category. Can anyone give me some guidance on how to code the Submit button to search the posts that meet both category numbers?