Creation of Statistics in Pokertracker 4

I need customized statistics for Pokertracker 4 Hud. Those statistics are based on SQL working with a PostgreSQL database. The actual creation of the statistics is quite easy since there exists many examples already that only have to be adapted or slightly changed. What would be needed for the job is a knowledge of how Statistics for Huds within Pokertracker 4 are created and optimally an knowledge about the database schema that Pokertracker 4 creates (this schema is publicly documented and available). The workload for this project (provided someone has a little bit of prior knowledge with PT 4 statistics) is about 16 hours max. Please let me know if you have further questions.