Menu | <<<< | >>>> | [Create an Alternative Model] – click for an alternative model

Once you have added equations to a model (and before it has been configured for solution), you can generate alternative models from it.  The alternatives can be additional models with different names (and perhaps configured differently) or sub models where sheets or categories have been kept constant (cells contain data rather than equations).  This feature allows the structure and equations for one model to generate a whole series of partial model alternatives.