Scenario Builder is a feature to produce mortgage scenarios to compare against a mortgage and/or other scenarios. You then have the option to select a scenario and set it as the mortgage (i.e., overwriting mortgage information on the Application Edit screen).
Running Scenario Builder involves calculating the scenarios, saving the scenarios, and then running comparisons of scenarios. Up to 18 scenarios can be created for a mortgage. A scenario can then be selected to replace the existing mortgage. See Scenario Builder with Open Application.
In addition, Expert also allows Scenario Builder to be run without an application, in order to compare scenarios against each other. Up to 18 scenarios can be created in this manner during the user session Creating a scenario without an application is done through the Tools screen. Such a scenario cannot be used to replace an application. See Scenario Builder without Application.