With no u12 grade, smaller children aged 12 and 13 play in the weight-restricted grade and bigger players, in the u13 open grade.
Feedback about the concept has been mixed but the union's junior advisory board kept faith with it last year to give it more time to succeed.
Whether a participation model should be applied to all junior rugby may be another point of debate.
From 2018, children in the u10 grade played round robins, with no finals, recording of scores or points tables, in line with the younger grades.
More than 1000 children play rugby in the Poverty Bay junior grades.
Administrators ran a 10-week season last year that fell within schools' Term 2.
The rugby union had raised concerns about the suitability of Waikirikiri Park for junior rugby — expressing dissatisfaction with the changing-rooms building there and perceived risks to children's safety resulting from toilet entrances being out of sight of the playing fields — but chose to stick with the Kaiti ground.
The meeting will be held at the OBM clubrooms on Wednesday from 5.30pm.
Coaches, parents, children and “anyone interested in the junior rugby competition” have been invited, but people have been asked to register for the event on the union's Facebook page.