Hello, - If the cassette flooring teeth will be applied in this way, ignore the warning. -One account beam can be defined for both directions in cassette slabs. If the cassette slab is adjacent to more than one slab, ignore the typical tooth warning again. (For example, KD5 slab is continuous with both KD10 and KD11.) For cassette drawings, you can first define the calculation beam to ensure continuity with the 1st slab and get a drawing. Then you can arrange the calculation beams to ensure continuity with the 2nd floor and get a drawing. Calculation beams do not affect the overall structural analysis. - It is not appropriate to open a gap in cassette flooring to cut the teeth. These gaps are not taken into account in tooth calculations. Good work