Lecturer: Problems with a module, academic problems - assessments etc.

Tutor (from tutorial): Problems of understanding concepts, examples.

Personal Tutor: Problems with overall course, thinking of quitting etc.

Year Head: Class having problems overall with modules.

{Year 1 - Monica Ward;

Year 2 - Ray Walshe}

Class Rep: Overall class problems that they can bring to Year Head

Chair of Course Board: Examination problems.

{Renaat Verbruggen}

Head of school: Problems unresolved still.

{Joe Morris}

The Principle is: Solve problems as close as possible to their source.

or in plain speak:

Don't ask Joe a  question about your Computer Architecture.