Samsung is really bad about naming things. Sometimes they even give the same name to two different things which have different functions.
This confuses a lot of people when it comes to modes. There is an “away mode” for the location and an “away mode” for security. But they are used in different ways and set differently.
See the following FAQ. (The topic title is a clickable link) although the examples there are from the older app, the same concepts apply.