shading/overhangs modelling in OpenBuildings Energy simulator

Hi, How to model shading/overhangs in OpenBuildings Energy simulator for 'standard project' (not conceptual)? 

The tab 'Shading' does not seem to work for me.

Is there any course that would cover the subject ? AECOsim Energy Simulator Modeler training does not seem to be available at the moment. When I try to download it I get the message "This page isn’t working right now".

Many thanks.