A jumping castle operator charged over the Hillcrest Primary School tragedy might be given bolstered security and a private room for an upcoming court hearing.Rosemary Anne Gamble, the owner of Taz-Zorb, is accused of workplace safety breaches over the incident in northwest Tasmania on December 16, 2021.Six children - Zane Mellor, Peter Dodt, Jalailah Jayne-Maree Jones, Addison Stewart, Jye Sheehan and Chace Harrison - were killed after a wind g…