Answer:
Drifted snow loads can be generated according to EN 1991-1-3, 5.3.4 (3) with the load generator. In addition to the load cases for non-drifted snow, it is also possible to quickly define load cases for drifted snow.
For this, it is necessary to create a separately generated load for each section of the roof. Furthermore, the sides on which a drift occurs must be selected in the load generator (see the video).