Take a cylinder, cut the bottom half of it so its a semi circle, extrude to make it bigger or smaller, walls are made by extruding the outer polygons of the same cylinder.
step 2 of 6
Made with a simple box and inset/extrude tools.
step 3 of 6
Central table is made my using cylinder and choosing 6 sides, outer 6 tables for contestants are made my using a box model and extrude tool. Place the tables appropriately on the podium.
step 4 of 6
Made from a single box model with extrude, inset and bevel tools. Place the monitors by using aling on the tables.
step 5 of 6
Made by going to the geometry menu and in the drop down menu choosing stairs. Simple as that.
step 6 of 6
Arrange everything in places where they're supposed to be, resize if needed.