Hi sailesh29 ,
Thank you very much for your post.
Additional column within Stock Central is not something I can help you with. Of course it is possible with extra development, but you would need to keep the support for this feature going forward. I can not guarantee some changes will not affect the work that developer will do.
However, if you really need this feature the best would be hiring the same developers that make ATUM for me. If you are interested, here is their site.
Best Regards,
Pavel