I want to do this Extrude Path, but what should I study?

[LeeJaeYoung]

I want to do this Extrude Path, but what should I study?
In Archicad, only those perpendicular to the plane seem to be extrude...

[LeeJaeYoung]

Thank you for your interest.
I am a beginner so please help.
Thank you again.