The objective of this assignment is to construct a MULTI$-$METHOD MODEL $($combination of system dynamics and discrete event simulation model$)$ that accurately simulates the supply chain operations of a company. In order to accurately predict the inventory level of the supply chain model as well as the demand, potential users and users within the market place a combination of system dynamics and discrete event simulation modelling is combined. The reorder point as well as order quantity drastically impacts the inventory level fluctuation over time. Furthermore, a system dynamics model is constructed in order to accurately account for and simulate the market behaviour that the company operates in$.$ Both models will influence one another based on operations unfolding in each of them.