Batch processing watermarks on documents - can this happen automatically?

Hi,
 
I've set up a batch process in order to watermark an ongoing series of PDFs. I have set the location of the inbox and outbox for the watermarked PDFs on a shared drive.
 
However, I would like other members of the company to use this facility, without me having to go back into my Acrobat and running the batch process.
 
So, ideally, I'd like this to happen automatically when the user puts the PDF into the 'inbox' (i.e. a watermark would then be put on the PDF and it would transferred to the 'outbox').
 
I wondered how this would be possible?
 
Thanks,
 
James
 
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Software used: Adobe Acrobat Professional version 9