Research at the University of Arizona and elsewhere have suggested that Electronic Meeting Systems augmented to support construction of Activity models can effectively support groups during development of semantic models. Group-enabled tools developed at the University of Arizona allow large groups of individuals from various functional units of an organization to actively participate in model development and to build models two to three times faster than traditional modeling approaches. Rapid model development shortens project times and makes it more likely that key personnel can participate during model development and analysis. To date, the tool set has been successfully used a number of groups for the collaborative development and analysis of business models using the IDEF0 Activity modeling methodology. This paper describes two software methods used to insure model correctness and shorten the model reconciliation process