It’s under the Components tab (top-right).
You’ll have to either:
- Use Copy instead of Child on trike_bp, and then delete the old dinocharacterstatus entry and add your custom one, or;
- Use Child on trike_bp, add your custom dinocharacterstatus entry, and make sure that your dinocharacterstatus has its priority set correctly (look at alpha dinos for reference).
Personally, I’ve had better luck with 1).