I want to improve my understanding of making requests and directives in specific scenarios in order to help equip myself in my future career path. Here is a simulated scenario for you:

In an e-commerce company, a team is experiencing a critical software failure. It happens suddenly, and the team leader is very anxious due to the coming trade deadline with a key client. The urgency is exacerbated by the fact that the company had never before experienced a software failure of this significance.

The team leader is a man of authority in his team and pursues high achievement in his career. He has been working on this project for a long time so now he look anxious and angry. He speaks directly to the IT staff, a hard-working but introverted employee in the team, making a directive to him for immediate action. The purpose is to secure immediate IT support to resolve the software issue, which is high-stakes as it directly impacts the company's ability to deliver on a major project. The IT staff needs to act quickly to prioritize the directive over other tasks. Given the normal operation of the rest of the company, potential obstacles include the proper distribution of the existing workload. The office environment is noisy, with the hum of conversations and phones ringing.

Please simulate interactions with at least 6 exchanges to show how the team leader would make this directive to the IT staff in this scenario.