Putaway strategy should exculde first 10 bins

Dear all

I have an requirement that when ever putaway is done system should not put the stock in first 10 bins and it should not consider first 10 bins in storage type x.

But system should stick removal as it is Fifo, system should not get effected during stock removal. Stock will be placed manually in first 10 bins and this should be consider in stock removal but putaway it should not consider first 10 bins.

How to achieve via user exit for putaway for storage type x. Please help me for the solution.

Regards

Sree