There are two major places you can check where you can regularly participate in the democratic process.
Auckland Transport‘s Have Your Say page — the usual spot to find proper transport stuff to comment on. There is always an opportunity to speak up for bike safety and connectivity – especially for projects that propose nothing for us.
Auckland Council‘s Have Your Say page — which has a bigger focus on parks and nature areas. This includes changes to most boardwalks and pedestrian bridges in parks, which the bike community often cares a lot about.