timestep in a specific domain

Alex

Good morning

I know there is the possibilty to use a timestep for a specific equation class in a specific domain.

To do this it's necessary to edit the ccl file.

I don't know what I have to write in the this file to set a specific timestep for the energy equation.

Is there anyone who can help me??

PS: it's obvious that I'm doing a steady simulation

thank you all

Alex