You would have to remove all the little knobs in the back (winder etc) then remove the little screws in the back, pop it off and
you will notice multiple oil sinks on the surface of the clock plate. Oil sinks are located where the ends of the steel arbor meet the clock plate. Please refer to the picture showing an oil sink. Add one small drop of the proper oil to each sink, careful not to add too much as it will run down your movement. The tiny drop will be enough as surface tension will hold on to the oil and slowly distribute it as the clock runs. Do the same for all oil sinks and then put your clock back together. The knobs in the back should either screw off or pop off. You might not have to take off one or two as there might be an opening big enough in the back cover for it to just pass through, I cant really tell from the pic but Im sure you can figure it out. Here is a drawing of the oil sink example. Nice clock, have fun!