A Working Group is a subdivision that represents a crop, discipline, or activity specifically related to the section or commission. Members of ISHS are asked to choose and join at least one working group. An ISHS member may belong to a maximum of 10 working groups. Each of the working groups sponsors and holds periodic international symposia concerning the relevant horticultural science. These symposia are convened at a time period and location democratically elected by members of the working group. Voting members are determined by a list provided by the secretariat to the ISHS representative prior to the first day of the symposium. ISHS encourages that subsequent symposia are held on a different continent than the previous location, to insure accessibility of the science to a wide scope of the international membership.