Expression 3 Knobs on right hand side.

These are encoders.  The section on encoders in the manual starts on page 77 (PDF page 91) of the Expression 3 manual found here: https://www.etcconnect.com/WorkArea/DownloadAsset.aspx?id=10737461294
These encoders are for control of parameters of moving lights which have been patched using personalities.  They are assigned in the Encoder Setup Display.

These are encoders.  The section on encoders in the manual starts on page 77 (PDF page 91) of the Expression 3 manual found here: https://www.etcconnect.com/WorkArea/DownloadAsset.aspx?id=10737461294
These encoders are for control of parameters of moving lights which have been patched using personalities.  They are assigned in the Encoder Setup Display.