Hi ParallaxCollab!
You might look for this setting feature:
[image: 0_1497458430171_Bildschirmfoto 2017-06-14 um 18.39.59.png]
There is no other way to modify the breakpoints.
Best!
Marius
In a limited way it is actually possible to only address the tablet version. See here on the left bottom:
[image: 0_1499272606526_Bildschirmfoto 2017-07-05 um 18.36.11.png]