This paper presents generic simulation tools which rely on an original methodological approach of designing multi-agent simulators. We will see that these tools are generic specially because they are not related to a particular scheduling method. On the contrary they aim at providing facilities that allow to design complex activation structures that remain comprehensible, analyzable and moreover modifiable, thanks to a problem division. To achieve this, the main idea of this methodology is to express the multi-agent system (MAS) simulator as a particular MAS itself and use explicitly its subjacent organizational structure. We will show how the sc Aalaadin organizational model enables us to finely apply such a methodology. Precisely, we will present a particular agent of sc MadKit (the platform that relies on sc Aalaadin): the it Scheduler agent and its tool called it Activator.