The Parameters tab is used to specify certain parameters for which the Portfolio task will be executed. The Instance Key and Stream Key tables displayed on the tab specify the instance key and stream key parameters, respectively. These properties are inherited from all the DataModel objects on which the included Portfolio object is based. You can modify the values of the displayed parameters. For example, if you specify instance key and stream key parameters and select available DataModel instances to be processed, the Portfolio tasks for the specified instance key and stream key parameters will be executed.