Hi, Guan-Di and a Happy Easter to you.

I believe that I now understand your situation, in that you are supporting "front office" applications.............the Ledgers, inventory, sales order processing, logistics, office productivity..............that sort of thing?

Please correct me if I am wrong, but my impression is that you deal with the end user systems, the various departmental/functional managers and their staff. That puts you in the "Business Analyst/Support" category over here

OK, to get started, can you list the functional areas and applications/systems that you will be responsible for?

You MUST get this recognised as a project as it will require a fair amount of time and resource......................in particularly that of other departments, who may not see things as we do?