Category Display Changing from Grid to List

When I was trying to set up my home page, I selected the Categories to be displayed and it asked if I wanted “grid or list.” I selected “grid” but now I want to change it to “list” and I cannot figure out how to get this option again. Anytime I go back to select categories to display on home page it automatically goes to do the grid display and does not give me an option to select list. How do I get the list option back?? Thanks!