HEC-ResSim User's Manual Alternative Editor Current: Ensemble Tab PDF Download PDF Download page Ensemble Tab. Current page All pages Ensemble Tab The specification of ensemble members may have bugs or confusing behavior. See ResSim 3.5 Known Issues. The Ensemble tab in the ResSim Alternative Editor is only activated when the Ensemble alternative type is selected in the Alternative Run Control Tab.Learn about the Ensemble Alternative TypeEnsemble Computing HEC-DSS Collections DSSVue Collection Utilities ResSim Ensemble Alternatives Defining an Ensemble Alternative ×