Create a quick button to DEALLOCATE multiple sales orders without having to remove the allocation from them one by one - a sort of batch deallocation option. 

I work for a company that every end of the month needs to deallocate all stock from the existent sales orders to run a quick stock take - and each time my colleague and I have to offset the allocation one by one and the steps that require the deallocation it does take a very long time - especially when we have loads of sales orders allocated with present and futures dates. 

There is already a button that does a BATCH ALLOCATION for single or multiple sales order - can the same button be created for the opposite purpose?