How to save file of contained field on Server

[Genelia]

I want to know in container field when we insert the Document/File as a reference on server side.the person A who is inserting document can see that document but another person B who is also using server side can not view that document.because reference file is on person A system. How to overcome this problem. i just want to insert reference of file due to reducing file size so that accessing of file fast.

Geetanjali !!!!