Ultimately, these setbacks cause financial strain that can seriously inhibit the companys workflow and revenue as projects become delayed or dropped completely. This is especially likely in situations where multiple departments rely on shared resources, as the mismanagement of resources could lead to even more inefficiencies and setbacks across departments. Interpret this statement in relation to resource management across multiple projects. You would need to firstly define what multi-project management is and then summarise what the importance of multi project management is. Thereafter, expand on the challenges likely to be encountered in managing multiple projects simultaneously and recommend the relevant tools to manage multiple projects, highlighting specifically, how the Gantts Chart helps to optimise resource usage without causing setbacks or financial strain.