Simple-File-Manager/app/src/main/AndroidManifest.xml

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

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/launcher"
        android:label="@string/app_launcher_name"
        android:theme="@style/AppTheme">
        <activity android:name=".activities.MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>

                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>

        <activity
            android:name=".activities.AboutActivity"
            android:label="@string/about"
            android:parentActivityName=".activities.MainActivity"/>

        <activity
            android:name=".activities.LicenseActivity"
            android:label="@string/third_party_licences"
            android:parentActivityName=".activities.AboutActivity"/>

        <activity
            android:name=".activities.SettingsActivity"
            android:label="@string/settings"
            android:parentActivityName=".activities.MainActivity"/>
    </application>
</manifest>