Start position of print

Hi
I have just obtained an Ender-3 printer and I am trying to use Cura to produce my prints. I have now found out how to load the memory card and load it to the printer. Everything seems fine apart from the fact that the print is falling off the front of the work table. I cannot find how I can move the object to the centre of the table.
Can anyone help me please as I am desperate to produce my first print.

Thanks

Alan

Is the part on screen in the middle of the slicer before you create the gcode? Try Orca too, might work differently than Cura.