The model settings are listed in the details view after you click the Model Settings 
toolbar icon. Model settings are saved with the
NDF (*.ndf;*.xml) file or DesignModeler .agdb file.
Note that the default values of the model settings are controlled by preferences in the DesignModeler options. For details, see Addins in the Ansys DesignModeler User's Guide.
The model settings include:
Show Advanced Properties – This specifies whether the advanced parameters or expert parameters are shown in the details view. This only applies to specific features, such as the Blade and Splitter.
Length Tolerance – Sketch edge tessellation tolerance in current length unit
Angle Tolerance – Angle graph tolerance in degrees
Ang/Thk Beta Definition – "Beta from Axial" or "Beta from Tangential"
X-Axis for Angle Graph
X-Axis for Thickness Graph
Update Features from NDF – With this preference set to "Yes" (default), loading an NDF file causes any existing features to be updated by any features of the same names from the NDF file. This enables you to update the BladeEditor geometry as part of a batch process.
To instead ensure that a new flow path and associated blades are created when loading an NDF file, set this preference to "No".
Enhanced Blend Booleans – Switches the algorithm used for performing Boolean operations, affecting existing and new features within the current session.
Try setting preference Improved Boolean Operations to "Yes" if:
StageFluidZone feature generation fails for a blade that has a hub blend or shroud blend, or
You cannot easily merge (using DesignModeler features) a SectorCut feature with a blade that has a hub blend.
Note: It might be difficult to manually (using DesignModeler features) merge a SectorCut feature with a blade that has a shroud blend. You cannot merge a SectorCut feature with a blade that has a shroud blend by setting Improved Boolean Operations to ‘Yes’.
Try setting preference Improved Boolean Operations to "No" if:
For a blade with any hub/shroud blend, there are problems with the blend geometry near the leading/trailing edge of the blade, particularly where the hub/shroud is highly curved.
Note that changing preference Improved Boolean Operations can slightly affect the resulting geometry for blades that have a hub/shroud blend. When generating a SectorCut feature, changing this preference also affects whether the resulting geometry includes a copy of the blade that is merged with the Hub geometry. For details on the SectorCut feature, see SectorCut Feature.