Control the area and scale of placed and selected sections, and the location of placed sections for lofts.
Access
On the ribbon, click 3D Model tab 
Create panel Loft 
. Then double-click an existing point created by the Area Loft command, or right-click the point created by Area Loft, and click Edit.
- Section Position
-
Specifies the position of the placed section. After initial section placement, you can control the position only by editing the value in the dialog box.
Proportional Distance Dimensions are relative along the length of the centerline. Section placement is relative to the length of centerline.
Absolute Distance Places Dimensions along the absolute distance of the centerline. For example, if the centerline is 16 inches, you can place a dimension half way (8 inches).
- Driving Section
-
Controls section position and size.
- Driven Section
-
Provide feedback on section size, without altering the area loft. Driven Sections control only section position.
- Section Size
-
Area Scales section to match specified area value. Dimensions are relative along the length of the centerline.
Scale Factor Scales section to match specified scale factor.