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Plant Component Availability Schedule

What is the recommended approach to schedule the availability of individual plant components in EnergyPlus? An example use case (contrived) might be a plant with two chillers in parallel and you want both scheduled to be available in the summer, but perhaps only one of them available in the winter. I admit this is a contrived example, but I think it clarifies the question as simply as possible.

My question is motivated by this related OpenStudio question. @aparker answered half of the question about plant load range operation schemes, but we really don't have a good answer for how to schedule availability of individual components in OpenStudio. E+ has availability managers that operate at the system level, but that doesn't give us component level control. There is also an availability schedule assigned to each plant operation scheme via the operation schemes list. It is my belief that this is about as close as you can get to component level scheduling, but I'd like some confirmation from the E+ community.

Ultimately we want to add some capability to OS in this area, and I'm trying to research the best path forward.