Why dont I have the option to add geometry operation!

i need to run a simulation for the f1 in schools competition and i dont have a lot of time
so if anyone knows what to do please help me

Hi gkikaselisseos,

there are a lot of public projects on F1 in School.

Maybe you find a project from which you can use as a template for your car.
Also please have a look at this tutorial on external vehicle aerodynamics.