Justice Woolford ordered both to serve a 24-hour curfew with family members - Nattrass-Berquist on the North Shore and Wallace-Loretz in west Auckland.
Both were barred from using alcohol or drugs.
Family wept as Justice Woolford gave his decision and the two defendants shared an enthusiastic embrace in the dock.
Nattrass-Berquist and Wallace-Loretz went to police on New Year's Eve after their names had been released to the public in relation to Mr Gillman-Harris' death.
Two days later, they were charged with murder and made a brief court appearance at Auckland District Court.
At their next appearance the following week, two further charges were laid against each of the youths.
They are also accused of robbing Mr Gillman-Harris of cash, a cell phone and bank card as well as unlawfully taking his $15,000 Range Rover.
The pair will be required to enter a plea when they appear in court next month.