As of V12 SP4 a plane can not only rotated on a main axis (X/Y/Z), but on any freely specified axis.
Select one of the Base planes (XY/ZX/YZ) and click on the context menu command Insert new plane....
Under Type, in the list field, select Plane with rotation.
In the list field under Turn around, select option Custom Axis.
The rotation axis is specified via a direction vector, which has to be determined in the dialog area Rotation axis AND via a point of axis, which has to be determined under Point on axis.

![[Note]](https://webapi.partcommunity.com/service/help/latest/pages/it/installation_ecatalogsolutions/doc/images/note.png)

