Firstly, it placed a new duty on leaders of political groups to take reasonable steps to promote and maintain high standards of conduct by the members of their group.
Yn gyntaf, gosododd ddyletswydd newydd ar arweinwyr grwpiau gwleidyddol i gymryd camau rhesymol i hyrwyddo a chynnal safonau ymddygiad uchel gan aelodau eu grŵp.