Yes, but invited Ring Presenters must be obligated engineers (and wearing their iron ring on the day of the ceremony) and have at least four years experience since graduation in order to be eligible to present a ring to another candidate.
Family members acting as invited Ring Presenters must meet the requirements noted above. Professors and other members of the university teaching staff cannot act as Ring Presenters to their own students (unless they are a relative of the student. e.g. parent, grandparent, spouse, etc.) AND meet the requirement for invited Ring Presenters noted above.
The provisions noted here are required to ensure a mentor-candidate relationship between the Ring Presenter and candidate. Only one guest per attendee is permitted due to space limitations.