How to Modify the Smoothing Distance 
1. Open the Contour Property Page by selecting the
Properties button 
on the LP360 toolbar, then click the Symbology
tab, the Contours tab, and the General
tab. This is the order of the nested tabs. Alternatively, the user
can right-click on the LAS layer, click on Properties,
and navigate to the General tab that way.
2. On the Contours - General property page, enter a number to define the spacing size in Map Units between vertices in the Smoothing Distance field.