Setting surface absorptivity and emissivity

Is there a way to specifcy a surfaces absorptivity and emissivity seperately? Right now I only see emissivity is a option that you can set.
Here is my project:

Thank you!

Hello,

For a steady-state simulation, Kirchhoff’s law gives us that the emissivity is equal to the absorptivity. Therefore, when setting up the emissivity, you are automatically defining the absorptivity at the same time.

Cheers