How to Define Components as “Core” or “Finish”
Composite Elements
For composite elements (Wall, Slab, Roof, Shell): skins can be defined as either Core, Finish, or Other in the Composite Structures Dialog Box. You can define multiple skins as Core, but these skins must be adjacent to each other.
You can define multiple adjacent skins as Finish, but they must include one or both of the outermost skins.
Column Veneers
Each veneer can be defined as Core, Finish or Other, in Column Tool Settings.
See Display of Column Core and Veneer.
Profile (Complex) Elements
For Profile elements (Wall, Beam, Column): Components can be defined as Core, Finish, or Other in Design > Profile Manager.
See also Components Panel of the Profile Manager.