Is it possible to handle variations in a custom manner when counting stock?

I am trying to use your plugin to handle our summer camps. We have 2 locations each with a different number of seats.

When you choose a session (AM/PM/ALL DAY) I would like to have custom calculations to handle the seats. For example:

EXAMPLE 1: If you book ALL DAY variation, then it deducts one from inventory for that location.

If you book AM, then it deducts one from inventory for ALL DAY and AM, but PM is not changed.

So, if we have 10 seats, in example 1, then you would have 9 seats left for any variation. In example 2, we would have 9 seats left for AM and ALL DAY, but 10 seats still remaining for PM.

Thank you in advance for your repsonse!

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