At upload time, some automatic metadata extraction from the file name, is employed:
if file name contains the letters "cam" followed by a single or two digit number the camera number will be set automatically
if file name contains the letters "grid" or"cube" it will be get the category XCalibGrid and XCalibObject, respectively.
if file name contains the letters "vis" it will be get the category VisMovie. If a file has extensions .cine or .avi and the file name doesn't contain grid, cube or vis then it will be assigned as category XMovie.
When you have selected the files you want to upload to the server, then press the Upload All Files button, or if you want to upload your files one by one then use the Upload button shown in front of each file.
If you want to remove a file from the upload window, just press then Cancel button shown in front of that file.