This report delves into the realm of organisational behaviour, encompassing two distinct activities. Activity 2A focuses on the practical application of teamwork and leadership principles through the simulation of a diversity seminar in hospitality. It highlights the challenges and successes of a diverse team, utilizing Bruce Tuckman's model and Belbin's team roles to analyze team dynamics and effective cooperation. Activity 2 presents a consultant's report to the executive board of Marriott Hotels, analyzing the impact of organisational behaviour theories on employee performance and organizational efficiency. The report explores theories such as the Path-Goal theory and Social Capital theory, offering recommendations for improving leadership, employee motivation, and overall performance within Marriott Hotels. The report emphasizes the importance of effective leadership, team morale, and a healthy work environment to achieve organizational goals.