Hello there; If we take a look at it in order: 1- The answer given before is correct, if the consoles are hinged in this way, which is not a suitable solution on all floors and facades, connect these eaves with a connection that transfers torque to the main elements. For example, bolted joint with head plate, column-beam butt plate stiffened joint. As you can see in the image, the column - beam should be placed in the form of bolts after the lower and upper caps in order to transfer the geometry of the butt plate stiffened joint's geometry. 2- On the 1st floor, a cross is formed 3 times in a row. You can understand this situation as follows, when you click on any element on the perspective screen, it should normally light up in purple. If it is not lit and there is no change, it means that more than one element is on top of each other. In this way, it is necessary to delete until only one element remains. You had such a situation in the diagonal on the 1st floor middle axle, it was deleted. 3- There is a conflict in the analysis model when a union is entered into the beams you have created with the single secondary beam command. For this reason, either do not join these elements or enter them with the steel beam command and then connect them with a single slip plate joint. 4- You have defined the slabs as multi-part, as if they will only come to the secondary beam column. Instead, select the outermost contour of the floor starting from a beam parallel to the secondary beams and form a closed polygon. Your floor will be formed. Then, you can create spaces where necessary with the space command in the tile menu. 5- Stair beams are not connected to any place at their lower ends on the lowest floor. Two columns were placed there. Good work.