If you want to draw the data you must use a MIDI track and not an instrument track to access the MIDI envelope dialog. The pitch wheel is type Wheel in the MIDI envelope dialog. The mod wheel is type Control, value 1:Modulation.
This will create automation envelopes for these two MIDI events in the track view that can be edited just like any other automation envelope.
If you elect to record the data using a controller, you can convert the MIDI data to envelopes using the
Clips > Convert MIDI Controllers to Envelopes... menu option or edit the data in Piano Roll View.