Scan Tools > Surface and Curve Manipulation > Modifying Curves > To Use Sliders
  
To Use Sliders
You can use sliders to move points with more precision.
To use sliders:
1. Select a point to drag.
2. Click Sliders on the Modify Curve or the Modify Surface dialog box. The Sliders section opens in the dialog box. You can use the following sliders:
First Direction—Moves a point in the first direction.
Second Direction—Moves a point in the second direction.
Normal Direction—Moves a point in the direction normal to the surface.
Sensitivity—Adjusts sensitivity of the slider and mouse movements.
3. Move sliders to modify the surface or curve as needed.