Skelion Plugin - Shading derate

[RaquelF]

Hi!
I'm new to Skelion, and I am having some troubles with the shading derate! I was wondering if it is possible to calculate the shading derate just for some panels and not for the whole faces/groups.
My main goal is to make a first analysis to see what are the panels that have, let's imagine, more than 95% of the shading derate factor(with the erase panels tool), and then I want to analyse the shading derate only from these panels (that can be from different faces). Is this possible or I just can calculate the shading derate of groups/faces?

Thank you very much in advance!

Raquel