1. A method for managing development of a model, comprising: accessing by a plurality of users a processing unit operable for the development of the model; receiving at the processing unit a plurality of model development instructions from the plurality of users; developing the model in a plurality of steps using the plurality of model development instructions; receiving at the processing unit a plurality of signoff instructions corresponding to the plurality of steps for developing the model, each of the plurality of signoff instructions being received at the processing unit after the corresponding one of the plurality of steps is performed and each of the plurality of signoff instructions indicating whether the respective step is approved or denied; approving by the processing unit a respective step if the corresponding signoff instruction indicates approval; and rejecting by the processing unit the respective step if the corresponding signoff instruction indicates denial, wherein the processing unit is operable as a central location accessible by the plurality of users for developing, and signing off on the development of, the model according to the plurality of model development instructions and the plurality of signoff instructions.