GENSIM 2.0 is a customizable system dynamics simulation model of generic software development processes which takes as input the specifics of software development projects (e.g. size of the code document, headcount of the developer team and their skills) and generates as output a broad range of distinct variables (e.g. software product quality, total project effort) of interest to different users of the model. This technical report is dedicated to elaborate on current calibration of GENSIM 2.0, its calibration parameters and the source from which they can be potentially calibrated.