and yes you make the decision at the DA like for an ILS approach.
Important point most if not all AOC operations will add 50 ft to the non precision approach minima as you MAY NOT descend below MDA. This is different from a precision approach where a decision can be made at minima and the aircraft descend below minima due to inertia while transitioning from the approach to the go around.
By changing the name of non-precision minima to "DA" they have confused matters somewhat
as Jepps explain
Jeppesen charted AOM do not include an add-on when current MDA(H) is replaced by DA(H). Pilots are reminded to check their operator’s Flight Operations Manual or similar documents whether they have to apply an add-on or not.