Add them with the button in the post above. Long click on the like button (heart) below a post, there will be at the bottom, add the one you like to your emotes list. Next time you like there will be in the list.
Discussion
Try to do this on my android phone. But how do I add this https://emojito.meme/a/naddr1qqz5ummnw3eqygzrh2hsc28xe7cetvt7uzp7r84n5jhaltz5mxmt4utsyu8drylrfspsgqqqw48qaj4v3g
To nostr:npub142gywvjkq0dv6nupggyn2euhx4nduwc7yz5f24ah9rpmunr2s39se3xrj0 ?
I just found this. So cool. Log in to emojito with your nostr, bookmark a collection. Go back to amethyst. They now just show up to be added to your emoji options after you hold down the react button.