14 Divisions and 3 Commissions? ? Division Chairs meet in the ISHS Executive Committee every year while Commissions Chairs join in every other year ? ? within the structure of Divisions and Commissions more than 130 Working Groups are currently active ? ? to join ISHS Divisions, Commissions or Working Groups online or to update your membership details and participate in ISHS Mailing Lists sign in to your ISHS membership account here.