In this question:
... the screenshot:
... shows Geometry panel, with Modification: section, with Offset and Extrude inside - how can I show this panel?
ah found it, partially through here:
You simply have to click on that icon with two white dots connected with a curved line (have no idea how its called, when I do a mouseover over it, I get:
Type of active data to display and edit Data: Object data Python: SpaceProperties.context bpy.Data.screens("Default") ... context
... which tells me absolutely nothing - but by the icon image, I'd guess this submenu is called "Curves"); and then you get Geometry panel...