Both Main Commission and Committee positions are held for a 4-year term. A call for nominations for both is only made within 6 months of the start of a new term (with exception for vacancies that must be filled for the remainder of a former member's term). The current 2025 - 2029 term is open for nominations until 31 January 2025.
When establishing new Task Groups, ICRP calls for expressions of interest for experts to complete the membership, and selects candidates based on these criteria.
Mentorship opportunities are open as needed throughout the year.