Android/feature/src/main/res/menu/activity_main_drawer.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:showIn="navigation_view">

    <group android:checkableBehavior="single">
        <item
            android:id="@+id/nav_news"
            android:title="@string/nav_news_str" />
        <item
            android:id="@+id/nav_schedule"
            android:title="@string/nav_schedule_str" />
        <item
            android:id="@+id/nav_schedule_call"
            android:title="@string/nav_schedule_call_str" />
        <item
            android:id="@+id/nav_manage"
            android:title="@string/nav_manage_str" />
    </group>

    <item android:title="@string/nav_feedback_str">
        <menu>
            <item
                android:id="@+id/nav_send"
                android:title="@string/nav_send_str" />
        </menu>
    </item>

</menu>