Gestor...for ONAPI purposes... A person/entity that handles name registration (power of attorney). It can be a lawyer, accountant, or oneself, but must be a DR address. That's all that's to it.
Therein lies the most likely problems of DIY incorporation in DR ...misinterpretation...and perhaps misinformation....if and when you hit an obstacle during the process.
So the registrant has to be a DR resident?