I can't give a specific answer because the context and situation are unclear. However, in general, responsibility for changes may lie with individuals, groups, organizations, or governments, depending on the nature of the change. For example, if the change relates to improving workplace safety standards, the employer or management can be held accountable for it. If the goal is to reduce CO2 emissions, governments or environmental groups may be responsible for implementing the changes.
The resources and materials required for a change depend on the type of change. For example, for a manufacturing process, required resources may include new equipment, raw materials, employee training, and so on. If the change is aimed at improving workplace culture or diversity, resources such as employee training programs, awareness campaigns and hiring practices may be required.
The timeline for implementing changes also depends on factors such as the scope of the change, resource availability, and process complexity. For example, implementing a small change, such as changing an existing policy, can take days or weeks, while a major change, such as moving to renewable energy sources, can take years.
In summary, responsibility for change depends on the specific situation and circumstances. The resources and materials required depend on the type of change, and the schedule for implementing the change depends on many factors.