To Project Points onto a Rotated Plane

Set up an ACS such that the Z direction is the desired projection.
Press F8 to lock AccuDraw to the ACS.
Select the element placement tool, such as Place SmartLine.
Press F11, to set focus to AccuDraw.
Key in the AccuDraw shortcut RE.
In the tool settings, set:
Update Current ACS: Off

Move Origin: On
Select the element to which you want AccuDraw aligned and accept with a data point.
To commence drawing the element, snap to an element in the ACS plane and accept with a data point.
The point is projected onto the AccuDraw drawing plane.

The snap point is projected up to the AccuDraw plane.
Add more points by snapping to elements in the ACS plane to project the points to the AccuDraw drawing plane.

As you snap to elements on the ACS plane, the points are projected to the rotated AccuDraw plane.