Quantity step and sell all products in stock

I have a question.
I want to use the feature so that the product has a minimum quantity and is sold by quantity, but allows the addition of all products.
Example: I have 282 in stock, the minimum quantity is 70 and the quantity step is 70.
If I want to make purchases, I can add a maximum of 280 pieces. How can I make it so that I can purchase 282 pieces – i.e. all of them?



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