To create a new user-defined subbasin, first select the desired objects on the workspace. In the subbasin manager, make sure you are in the
User Defined tab. Next select
Subbasin, then
Append New Subbasin. A new subbasin is created that contains the selected objects on the workspace. The name of the subbasin can be modified by selecting the name and entering a new name (or using the right-click
Edit Subbasin Name menu). Alternately, you do not need to select the objects before creating the subbasin. Instead, create an empty subbasin and then add objects to it using the selector; see
Adding and Removing Subbasin Members for details. Additional subbasins can be created or removed using the menu options in the
Subbasin menu to append or insert a new subbasin.
The first four types are used in optimization. A Computational Subbasin can also be added using the
Subbasin, then
Append Computational Subbasin menu. See
Computational Subbasin for details.