External Fins and external shading (which can be added through the Shading program) can be incorporated in appropriate calculation methods.
External Shading for a site plan can be set up within the Shadows program and Fins can be attached to any window in a project. However, they will not be considered in a calculation unless the option is set to include them. To set these options look at the Design Data tab within the separate calculation modules. If the option is relevant to the calculation you can turn it on there.