This approach provides an alternative method to apply snow loading to the structure, without having to run the Snow Wizard
In order to manually apply snow loads, you must first create a loadcase and set its load type to Snow.
You can then manually apply loads to this loadcase in the normal way.
Note: Snow loadcases created manually in this way can have panel, member, and structure loads applied but cannot have snow (i.e. Uniform Snow, Valley Snow and Local Drift Snow) loads applied.