You only can have VIP Manager with minimum VIP Rank Platinum 1.
I'm still on VIP Gold, then I don't have any VIP Manager
It is possible for Gold Member to have VIP Manager.
I know about it when I registered myself to the forum VIP Battle, and I checked the rules first before register through my VIP manager.
Below requirement is taken from the VIP Battle rules:
You would need to have Platinum VIP rank (Gold members that have VIP Manager are also welcome to apply)
If I remember it correctly, I was Gold Member when I have VIP Manager for the first time.
Perhaps there are some special conditions on how Gold Member get their VIP Manager but I'm not sure about it.