Here is the side view of that positioning described in the previous photo.
When you are satisfied with the placement, mark the desired location of the screw holes with a pen or marker. Use a #39 or 2.5mm drill bit and tap the hole with an M3 x .5mm tap. This is the size of all the small machine screw theads used on the Hottop.
If the holes are there but the machine did not originally have this part, the hole to the left in the first photo (on the control panel side of the machine) may need a shorter screw because of the location of the side frame member. Washers can also be used to space out the screw so that it holds the try firmly without the screw "bottoming out." If you can see through the hole then the standard screw will work fine. If not, use a short screw.