Step #1: Click the white space in the comment box or reply button first in order for the "Add Media" to show up.
Step #2: Click "Add Media"
Step #3: Go to the right side (where the media section pops up) and click any emoticons you want.
Step #4: Search it using the title or if you want, my creator's old username (Camilapiplup) for random emoticons and they wil be there. Click your choice and enjoy~