Fusion offers a series of new abilities ranging from Menu Icons, Subtext support and much greater controls over the Multiple Column ability for dropdowns.
You can configure Fusion Menu at Extensions → Template Manager → rt_reaction_j15 and you will find all parameters under the Menu heading.
Fusion has support for individual menu icons for its dropdown menu items. These images are loaded from the /templates/rt_reaction_j15/images/icons/ directory where you will find 31 images by default.
To setup a Menu Icon, go to Menu → Mainmenu → Select/Create a Menu Item. Locate the Menu Image field in Parameters (Template theme - gantry-fusion) and select an image from the dropdown.
Subtext is the term used to describe the secondary text placed underneath the menu title.
To add your own Subtext, go to Menu → Mainmenu → Select/Create a Menu Item. Locate the Subtext field in Parameters (Template theme - gantry-fusion) and insert your desired text.
Fusion has the facility for dynamic column control for its dropdown. You can choose between single (1) or double (2) column modes for children of every single menu item via configuration.
To control the number of columns of each menu item, go to Menu → Mainmenu → Select/Create a Menu Item. Locate the Columns of Children field in Parameters (Template theme - gantry-fusion) and choose either 1 or 2.
Typically, a dropdown menu column will extend beyond the width of the browser window if you have enough child levels. However, with Fusion, the menu detects the width of the browser and will change the direction of menu pullouts so all menu items are visible without the need to scroll.