How do you get more space for your navicustomizer in Megaman red sun?

To gain more space for your Navi Customizer in MegaMan Battle Network: Red Sun, you can upgrade your Customizer by collecting and using Customizer parts. Look for chips and items that increase your available space or enhance your abilities. Additionally, completing missions and defeating certain bosses can unlock more customization options. Regularly check the Customizer menu to optimize your layout and maximize your space usage.