A licensee may earn the LUs by any appropriate methods that may from time to time be approved by the Board. A licensee may earn the applicable number of LUs in accordance with the following conversion schedule: 1 college credit hour — 5 LUs; 1 contact hour of professional development work, or professional or technical presentations made at meetings, conventions, or conferences — 1 LU; and Subject to exclusions set forth in this regulation, teaching of, lecturing on, or instructing on architectural subjects, subject to the following limitations: For the first presentation, a presenter may claim credit for the activity that is equivalent to two times the number of LUs awarded by the Board for the activity; and Unless the presentation has been substantially modified and updated for subsequent presentations, a presenter may claim only the same number of credits as awarded by the Board to the recipients of the qualifying activity.