Why is FAGUS not checking the ultimate shear of a slab supported on a beam?

A customer asked us why, when performing a shear analysis of this model, the FAGUS program did not give any results.

The mistake you made was to leave the material field for shear sizing with the default value in the variants tab. Since there is the possibility of two possible materials in this analysis, one for the slab and one for the beam, you have to tell the program which one to analyze or it will not know which one to choose.

Once the material is indicated, results are obtained.