projects/positioning/app/src/main/res/menu/scan.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@+id/action_scan"
        android:title="Scan"
        android:orderInCategory="100"
        android:showAsAction="always" />
</menu>