Adjudicating Authority definitions govern bankruptcy proceedings for personal guarantors and methods of service of documents. These rules define key terms for proceedings against personal guarantors: the Adjudicating Authority is allocated by reference to the Code; undefined terms adopt Code meanings; electronic form and electronic means are recognised as authorised secure transmission and recording mechanisms. A guarantor is a debtor whose invoked guarantee to a corporate debtor remains unpaid. Serve includes registered post, courier, speed post and electronic modes that generate acknowledgements, and permits affixation where other service cannot be effected.