Hello there; When steel elements are present, do not use the slab command under the reinforced concrete main tab under the slab, but the concrete slab immediately after the composites in the slab command in the steel main tab. If you want to exit the console, there is a change tile edge command in this tile command where you can extend the desired edge. Other than that, you have added modal analysis manually, it is not needed. We had to delete your joins to prevent the program from closing. While defining the joint, turn off the fast mode, and model by paying attention to which two elements you define between the two elements and whether the geoemtric is formed correctly.
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