Max, You need to clarify what need to be posted to different location.
If it is inspection lot qty, then it can easily be done from Inspection lot stock screen. However, this cannot be done, with similar approach, if you need to post the qty 'To Sample Usage'
Reason behind unavailability of this functionality is that you use this field when you do destructive testing and destroy the sample qty. So there is no point in shifting such quantity to anywhere from QI stock.
However, if there is something else, please share!
ntn