Now you create the grip of the knob.
Select the Right
plane in the FeatureManager design tree, then click Extruded
Boss/Base
on
the Features toolbar to open a sketch.
Sketch four lines approximately as shown to create the profile. Do not create any inferenced perpendicular relations between lines.

Add a Collinear relation between the vertical sketch line and the model edge as shown.
Dimension as shown.

In the PropertyManager, under Direction 1:
Select Blind in End Condition.
Set Depth
to 5.
Click OK
to create the extrude.