Now, to not create a Category Label from the member Absatz of the dimension "Keyfigures" you only have to select it explicitly and ensure that the property "Selected Measures in Categories" is set to false. The value of this property will be applied because it only affects explicit selected members and Absatz is now selected explicitly.
According to that you can also remove the Category Labels Q1, Q2, Q3 und Q4 by setting "Selected Members in Categories" to false and explicitly select the quarter members.
Less useful, but exemplary you could show the member 2015 in Category Labels by setting "Selected Members in Categories" to true and select 2015 explicitly.