My daughter keeps wanting to close the My Gabb, Gabb ID, Google Play, and Knox Manager apps. After hitting the lower left, 3 vertical bars, where all the open apps can be viewed, she tries to swipe up to close ones that she is not using. On the above listed apps, she gets the message: "security policy restricts you from stopping this application". Is there no way to have them to run in the background without having a window up?