app/src/main/res/menu/menu_navigation_drawer.xml

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

    <group
        android:id="@+id/group1"
        android:checkableBehavior="single">

        <item
            android:id="@+id/item_dashboard"
            android:icon="@drawable/ic_dashboard_black_24dp"
            android:title="@string/dashboard" />

        <item
            android:id="@+id/item_roles"
            android:icon="@drawable/ic_lock_black_24dp"
            android:title="@string/roles_and_permissions" />

        <item
            android:id="@+id/item_customer"
            android:icon="@drawable/ic_customer_black_24dp"
            android:title="@string/customer" />

        <item
            android:id="@+id/item_customer_payload"
            android:icon="@drawable/ic_business_center_black_24dp"
            android:title="@string/customer_payloads" />

        <item
            android:id="@+id/item_ledger"
            android:icon="@drawable/ic_book_black_24dp"
            android:title="@string/ledger" />

        <item
            android:id="@+id/item_accounts"
            android:icon="@drawable/ic_account_balance_black_24dp"
            android:title="@string/accounts" />
        <item
            android:id="@+id/item_teller"
            android:icon="@drawable/ic_teller_black_24dp"
            android:title="@string/teller" />

        <item
            android:id="@+id/item_product"
            android:icon="@drawable/ic_products_black_24dp"
            android:title="@string/products" />

        <item
            android:id="@+id/item_groups"
            android:icon="@drawable/ic_supervisor_account_black_24dp"
            android:title="@string/groups" />

    </group>

    <group android:id="@+id/group2">

        <item
            android:id="@+id/item_logout"
            android:icon="@drawable/ic_input_black_24dp"
            android:title="@string/logout" />

    </group>

</menu>