I've tried to apply online for HK immigration. Only scan the documents and they will return the pickup slip less than one week....but the fact is to bring the original document to pick up there but no need to wait too long at there (less than half hour)
However, I found another problem, as my maid need to bring my ID copy to get the OWA. After the OWA is ready with the chopped contract from the Philiphine consult...she took photocopy and returned me the original ...then she can apply loan already without the HK Visa.
All in all, it will much better to make all documents by yourself if not thru agent.