Load a different menu position in the main menu…sometimes

Hi there. I’ve got a WooCommerce clothing store that has their products broken into three different major categories: Women’s Standard, Women’s Plus and Men’s. I’ve written some code to set a cookie if they change categories or visit a product in one of the categories. Based on the selected category, I’d like to change the main menu being displayed at the top. Can you point me toward an action/filter in Enfold that would let me tell the theme to load a different menu or different menu position for the top menu?

Thanks!