Grade describes the position in an organisation from a "honorific" point of view. Salary is also usually based on grade, rather than on function.
Typical example of grade can be:
- owner: You can use "owner" for shareholder, partner or associate of the organization, who has the decision power in the board.
- executive: For the company managers who are "executives", e.g. CEO /CFO /CIO, you can use "executive" as grade. Note that for the other managers, they are treated as employees from a work law point of view, so they belong to the grade "employee".
- employee: Full-time or part-time employees.
- member: As stated in "Role", for some associations or organisations which are not a company, maybe there is not an owner, executive manager or employees, but there are members (active member who are voted into the board to have decision right, and non-active members). So you can use "member" as grade for this kind of organisations.
- trainee: Please remember this grade when there are trainees in the organisation.
There is no direct relation between grade and function. Grades differ from function in the sense that function describes actual operational position while grade describes a honorific position. A typical example is in the army, there are grades such as "General" and "Commander". Some army Generals are sometimes assigned to research management functions. Their grade is still general but their function is Director of R&D Center