$1.$ Introduction Business process modelling is an important tool used by organizations to analyse, improve, and optimize their operations. It involves creating visual representations of business processes, capturing the flow of activities, information, and decisions within an organization. Business process modelling shows comparison of new and old workflow, workload and performance measurements will provide a detailed implantation plan for users. It provides a common language and framework for discussing and documenting processes, making it easier for teams to align their efforts and work toward common goals. Business process modelling provides a clear, structured view of how different activities and tasks are connected, allowing organizations to identify bottlenecks, redundancies, and areas to automate. It helps stakeholders visualize end$-$to$-$end workflows, making it easier to identify areas for improvement, streamline operations, and improve overall efficiency. The modelling process often involve