To set the attributes for the inner and outer sill

Select Set Sill in the Parametric Frame Builder’s Action list box.
Select a sill type from the Sill option menu (not labeled).
Key in values for Overhang Back and Overhang Front.
Key in values for Overhang Right and Overhang Left.
Key in a value in the Thickness field.
Go back to step 2 to select another sill type.
(Optional) Save the settings file to activate the modified attributes or click Build Command to use this setting for this frame only.