Hi there, I'm a newbie with the flow simulation feature and I'm having problems because I do't see the same icons that I can see in video tutorials...

Basically I'm trying to do a simulation for heat management purposes and once I finish with the wizard on my browser tree are missing quite a lot of icons, can anyone help to understand why?

I attached my screen and one taken from a tutorial.

I don have fans or heat sources to add...

Thanks in advance