Every such society shall have the power to make a constitution and by-laws for the government of the society, the admission of its members, the management of its affairs, and the fixing and readjusting of the rates of its members from time to time. It shall have the power to change, alter, add to or amend such constitution and by-laws and shall have such other powers as are necessary and incidental to carrying into effect the objects and purposes of the society.
Ca. Ins. Code § 11015