Assign the Rotating Region Material
Hide the impeller part

Select the rotating region

Open the Materials quick edit dialog in ONE of the following ways:
- Click Edit from the toolbar:

- Click Edit from the Materials context panel:

Material DB Name = My Materials
Type = Rotating Region
Name = rotor

On the Axis of Rotation line, click the ... button
Click Z, and the -/+ button
Note: This specifies the axis of rotation to be in the 0, 0, -1 direction
Click Apply.
