UberMenu 3 allows you to have multiple, independent instances of UberMenu on your site and on individual pages.
If all of your menus will have the same Configuration (style, positioning, trigger, etc), you can create Multiple Instances using the same Configuration with different menus.
If you have menus which need to have different attributes (style, skin, orientation, position, etc), you can create Multiple Configurations in the Control Panel, which you can assign to your various menu instances.
If you need to add a new menu that does not already exist in your theme, you can add a new menu via PHP, Shortcode, or Widget