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Once you're in the application you should see "Select Device File" and "Select Elements File". When a file has been entered for BOTH of these, and you have selected a hardware file and initial conditions file, you can hit "Submit" at the bottom of the dialog screen to start the process of Upload into Oracle.
The following helps with the buttons on the above dialog window.
"Select Device File".
You can either enter a full filename by hand, or use the filebrowser, to browse to /mccfs2/u1/lcls/physics/onlinemodel/xal and select the file "modelDevices.xml", select it, and hit Open icon in the filebrowser dialog to make the selection. (yes, it's a bit confusing using the word "Open" to mean "Select" - talk to Oracle about that - they went cheap and used the firefox file selection widget, designed for selecting a file to open, but they use it to mean "select").
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