This document summarizes a presentation by Areej Al-Wabil, Phd from Prince Sultan University on simulation modelling in healthcare. It discusses how simulation is used to model patient flow in emergency rooms, allocate hospital resources, and model disease transmission. It also outlines some of the challenges of healthcare simulation, including issues with platforms, data sources, engineering processes, visualization, and modeling agent characteristics. The presentation aims to provide an overview of challenges and trends in simulation modelling for healthcare applications.