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Theme: Package, component in PCB

An LED with 4 pins shall shine from behind through a hole in the PCB. How to do that?
I want to drill a hole in the board and mount a 4-pin WS2812 LED backwards on it so that it shines through the drilled hole. How do I do this?

Mirror the "body" of the package without changing layers:

1 (Figure 1: Mirror horizontally without flipping

To do this,
select the package with M1. Now de-select the texts with [Shift] + M1. Then use the menu item shown and click with the appearing "mirror" cursor in the middle of the package. The pads remain on layer 16 and the position print on layer 21. The pin assignment goes with the mirroring accordingly. If you have to mirror vertically, you have to rotate the component before and rotate it back afterwards.

At the end you have to place a drill hole exactly under the LED.