This admin command instantly completes the incubation progress of the egg you are currently looking at (i.e. that your crosshair is over). Because this command only sets the incubation progress of an egg to 0%, you will need to make sure that hatching conditions (temperature) are met in order for the egg to hatch.
Find more commands on our Ark command list.
Click the "Copy to Clipboard" button on the right to instantly copy the HatchEgg command to your clipboard.