The commission shall elect from its number a chairman and vice chairman and shall appoint and at its pleasure remove or discharge such officers and legal, clerical, expert and other assistants as may be required in the discharge of the duties of the commission and shall fix and determine their duties, qualifications and compensations. It shall adopt a seal and suitable by-laws and shall promulgate rules and regulations for its management and control. It may maintain one or more offices for the transaction of its business and may meet at any time or place within the signatory states. A majority of the members from each state shall constitute a quorum for the transaction of business, the exercise of any powers or the performance of any duties, but no action of the commission shall be binding unless at least three of the members from each state shall vote in favor thereof.