How can we export revit to naviswork ?

How can we export revit to naviswork ?

1 from addins

2 external tools

3 navisworks



 

if you havn't it

set up export tool from here

http://www.autodesk.com/products/autodesk-navisworks-family/autodesk-navisworks-nwc-export-utility
2015: NavisworksExporters2015.exe

2014: NavisworksExporters2014.exe

2013: NavisworksExporters2013.exe