Developed and delivered an Nch Analysis feature for the AliceO2Group/O2Physics repository, enabling centrality-dependent multiplicity studies in particle physics data. The work focused on expanding analytics tooling by introducing configurable parameters and histogram registrations, allowing users to evaluate charged particle multiplicity as a function of centrality. Implemented in C++ with ROOT histogramming, the feature integrated seamlessly into the existing O2Physics analysis chain while maintaining clear documentation and minimal disruption to the pipeline. This addition strengthened analysis workflows, supported data-driven decision-making for centrality studies, and demonstrated proficiency in data analysis, parameter-driven configuration, and version-controlled feature delivery.