Uniform Civil Procedure Rules 2005 (NSW) - Regulation 10.21
How personal service effected generally
(1) Personal service of a document on a person is effected by leaving a copy of the document with the person or, if the person does not accept the copy, by putting the copy down in the person’s presence and telling the person the nature of the document.
(2) If, by violence or threat of violence, a person attempting service is prevented from approaching another person for the purpose of delivering a document to the other person, the person attempting service may deliver the document to the other person by leaving it as near as practicable to that other person.
(3) Service in accordance with subrule (2) is taken to constitute personal service.