Operator of etching machines in glass

I MODULE:Who is the figure of the person in charge of etching machines in glass? What is etching? The skills required for this role.MODULE II:In-depth knowledge of the etching process; Specific knowledge of the acids used; Types of etching.MODULE III:Specific knowledge in the field of mechanics; Specific knowledge in the field of chemistry; IT activity; Mechanical activity.MODULE IV:Work tools; Work techniques.