You have cambered beams in your structure and need to display the cambered points on a drawing.
With just a minor tweak to the beam element and the preferred Drawing Style, this can be easily achieved.
The cambered properties must first be defined. In the figure below, beam  is created and camber properties applied from the Camber properties panel.
Additionally, a Model Role, Cambered beam, was applied from the Naming panel.
Again, User attribute 1, Cambered beam, was applied from the User attribute panel.
NOTE: The "shrink" field is used for any kind of profile that gets longer or shorter by deformation during site assembly. The length of the beam is calculated considering the "shrink" and the weight is calculated without the "shrink". This field is located in the Beam properties on the Behavior tab and represents the length of the deformations that the part will suffer on installation.
Number the structure to apply the definitions to the beam  element.
As the beam elements have been numbered the Drawing can be created. However, the preferred drawing style must be tweaked.
For the example, we will use the Drawing Style Manager 5-Assemblies>5-Beam and change the MP-Beam Object presentation from VisibleHiddenSystemHelperLine to Cambered. Select Apply to lock in the changes and the Use button to create the detail drawing that will display the Camber.
You will be prompted to select the beam section you want to detail. For this example, the beam  is selected
The create detail window will be displayed. Select the Modify Settings option.
The ASDETPROTO-Assembly-ANCI-C.dwg prototype will be used. Select Ok to start the detailing process.
The result below. You can dimension the location of the camber using the Insert point toolset.
The Cambered beam callout was created by the insert label toolset and selecting the beam 
Remember that the User attribute 1” Cambered beam” was created for the beam properties earlier.
Double click on the default token label. Expand the Token flyout and scroll to the to UserAttribute1
Watch the tutorial below: