Via right-click, in the 3D view, call the context menu.
In order to create published elements on axes, points, etc., select Select sketch.
-> The dialog box Select sketch is opened.
For example, if you want to create an axis as "published element", select the respective sketch (here in this example "Axis: Sketch 1").
Confirm with OK.
-> The editing dialog is opened.
The process complies with the one described under Section 5.13.8, “ Classify standard parts for placement dialog ”.