Where an Act confers power to delegate a function, duty or power, then the power of delegation shall not be construed as being limited to delegating the function, duty or power to a specified person but shall be construed as including a power to delegate the function, duty or power to any person from time to time holding, occupying, or performing the duties of, a specified office or position, even if the office or position does not come into existence until after the delegation is given.