menu_base.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <group android:id="@+id/primary">
    <!-- You could include the menu icon attribute too -->
        <item
            android:id="@+id/home"
            android:title="@string/home" />

        <item
            android:id="@+id/dashboard"
            android:title="@string/dashboard" />

        <item
            android:id="@+id/bookmarks"
            android:title="@string/bookmarks" />
    </group>
    <group android:id="@+id/secondary">
        <item
            android:id="@+id/settings"
            android:title="@string/settings" />

        <item
            android:id="@+id/about"
            android:title="@string/about" />
    </group>
</menu>