Where do i find a tutorial for sectioning contour models

Question

tutorial or explanation on Sectioning Tool in micro-station to section contour models.

Jayson Perry · Answer

Hi Peter, 
 It might be more than what you need, but I found this Youtube playlist helpful in better understanding the Section Callout tool and other related tools/workflows: https://youtube.com/playlist?list=PLEtk-CjYPFGhTZ3jR556pyd0aot7zjfho There are individual videos for using all the Detailing tools here (last few videos in the playlist). 
 Also, here is the official MicroStation help documentation on the Place Section Callout tool: https://docs.bentley.com/LiveContent/web/MicroStation%20Help-v23/en/DraftingPlaceSectionMarker.html