How to extend concrete columns in Revit 2017?

[criss21]

Hello,
Can someone guide me on how to fix a concrete column height on Revit 2017?
As a beginner, I'm struggling a lot with how to fix this issue

Currently, I'm following this tutorial but couldn't find the solution

https://www.youtube.com/watch?v=T3d7VGxW_bY&t=579s

 

[BulbTheBuilder]

I don't have Revit on my PC so I can't share screenshots. But I am going to list some few steps

1. Select your column
2.Check the property tab
3.Look for the levels used for the start/end and modify column height from there. You can also use the offset function in the same property tab,