A call to the C$OPENSAVEBOX library routine allows you to browse the client machine's drives and select a directory or file. This routine is used in conjunction with other operations that have access to the client machine's drives, such as C$COPY, C$SYSTEM, DLL calls, and COM or ActiveX components. The server machine's file system does not appear in the box.
If your server machine is Windows, you can navigate to the server using Universal Naming Convention (UNC) notation. Set the C$OPENSAVBOX parameter OPNSAV-DEFAULT-DIR to the desired mapped drive or server directory using UNC notation.