**Main Menu** Let's say you want to use your module icon as your main menu icon. Make sure this file exists at: module_name/static/description/icon.png In the XML where you define your main menu, add the *web_icon* attribute: <menuitem name="My Application" id="module_name.menu_root" web_icon="module_name,static/description/icon.png"/> Then upgrade your module. **Application Menu** To set the...