New South Wales Consolidated Regulations(cf Crimes (Detention after Arrest) Regulation 1998 , cl 21)
(1) A detained person who is a vulnerable person is entitled to have a support person present during any investigative procedure in which the detained person is to participate.
(2) However, a detained person who is a vulnerable person solely as a result of being a person of non-English speaking background is entitled to have a support person present only if an interpreter is not required to be arranged under section 128 (1) of the Act solely because of section 128 (3) (a) of the Act.
(3) Before any such investigative procedure starts, the custody manager for the detained person must inform the person that the person is entitled to the presence of a support person during the investigative procedure.
(4) If the detained person wishes to have a support person present, the custody manager must, as soon as practicable:(a) give the detained person reasonable facilities to enable the person to arrange for a support person to be present, and(b) allow the detained person to do so in circumstances in which, so far as practicable, the communication will not be overheard.
(5) The custody manager must defer for a reasonable period any such investigative procedure until a support person is present unless the detained person has expressly waived his or her right to have a support person present.
(6) An investigative procedure is not required to be deferred under subclause (5) for more than 2 hours to allow a support person to arrive at the place of detention.
(7) A custody manager is not required to comply with subclauses (3)-(5) if the custody manager believes on reasonable grounds that:(a) doing so is likely to result in an accomplice of the detained person avoiding arrest, or(b) doing so is likely to result in the concealment, fabrication, destruction or loss of evidence or the intimidation of a witness, or(c) doing so is likely to result in hindering the recovery of any person or property concerned in the offence under investigation, or(d) doing so is likely to result in bodily injury being caused to any other person, or(e) the safety of other persons requires that the investigative procedure be carried out as a matter of urgency.