you need a customize command, check the reference if you have NG_Center.
normally all my command start with CUST_TSU_XX, it have description, only use useless slot like animating, entities (not lara :b) trap etc.., not sprite etc..
The command to link the new object to it's control is: CUST_TSU_OBJECTS, to assign special hardcoded sound it's: CUST_TSU_SOUNDS,
If you want the camera to be like TR3: CUST_TSU_AIMING, if you want lara to play the special animation when killed by certain TR2 enemy like xian statue: CUST_TSU_ANIMATIONS, some entity need another object to be able to work properly like flamethrower so link it
: CUST_TSU_LINKS