The main role of town planning consultants in Melbourne is :

Lay a blueprint of habitation
Development of property
Building structure

Along with building planning, these custom design builders in Melbourne also help build stadiums, an official building of government, lavish hotels, residential buildings, and parks. One thing is imperative to mention that these consultants know that you can make a place liveable not only by creating a structure but also by developing pleasant surroundings in that area. You must have seen other buildings, decent parks, swimming pools, hotels, and restaurants in its surrounding; these things are planned way before starting development.

These builders make sure that the area becomes the center of attention, and it should be as cost-effective as possible. Planning consultants are involved in the structure's development, but ther are way different than architects and builders. Their association starts in the first task of making a blueprint of the structure, which means they are the first ones to come on the board. The activities in which these consultants are involved are stakeholder, trainer, promoter, a facilitator, a strategist, and an instructor.

These planning consultants explain the whole procedure to the traders. Then the trader is the one who monitors the whole process during development. Traders closely see the execution part and the developing part. Now, he is the strategist who ensures the whole development of the plan. Keeping the pros and cons of the process in mind all the time is his job. The vision of the trader is important.

Source

it's a consulting firm.. so all relative fields must have been represented in each project most likely.
very few Nigerian firms function likewise in this regard.