Labeling features in ArcScene

Question

I used some DEMs I had to create an ArcScene 3D model of my parish. I also created contours from the DEMs and am trying to see if I could label the contours in the 3D model in ArcScene. I can see it's not straight forward using the Labeling feature as you can do in ArcGIS Pro.

Can anybody point me in a direction to do this?

SLouq · Answer

Figured it out.

I had to bring in the contour lines under 3D Layers. Then the labeling feature becomes active as expected