Feature request: Can we get resource management?

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Set up like this:

• We would be able to define an individual resource of which we have only one, or multiples of.
• We can also create a resource group or pool, that we can put any individual resource into for selection when we create a service.
• For ex. My use case would be 4 batting cages (could be rooms, equipment, etc.).
• I create a lesson, and choose the resource group with the 4 batting cages in, and indicate that I only need one batting cage.
• Therefore, when I create my services of 1, 2, 3, or 4 cage rentals, I could do the same.
• No resource would be booked if it is not available.