ORD R4U6: How do I show flow arrows in the plan view on our roadway ditches?

In the Feature Symbology for the ditch, select an Annotation Group in the "3D" group...

In the Annotation Group, define a Plan>Linear3d annotation that places a cell at the points.  In the Placement>Rotation Option field, you have the option to orient the cell in Positive Slope or Negative Slope direction.

After the Annotation group is set up, you run the Model Annotation or Element Annotation commands in the 3D model:

This works great. I would also need to add marks for the lowest and highest points along ditches. But not the global min/max but at every place where arrow change direction along ditches. Looks ORD will only annotate global lowest/highest point along linear feature.

Is it the way to automatically annotate/mark all min/max point along ditches?

for now my idea is to add event points at local max min, or create dummy CL with ditch profile set as active and annotate vertical change in plan as a localizator of profile extremums.

Possibly I miss sth and there is a way to automatically mark min/max along 3dlinear features. Is it? Or shall I log SR for change request.

Thanks

using ORD 2021 R1

This works great. I would also need to add marks for the lowest and highest points along ditches. But not the global min/max but at every place where arrow change direction along ditches. Looks ORD will only annotate global lowest/highest point along linear feature.

Is it the way to automatically annotate/mark all min/max point along ditches?

for now my idea is to add event points at local max min, or create dummy CL with ditch profile set as active and annotate vertical change in plan as a localizator of profile extremums.

Possibly I miss sth and there is a way to automatically mark min/max along 3dlinear features. Is it? Or shall I log SR for change request.

Thanks

using ORD 2021 R1