To add emojis to the intentions buttons:
Edit the response and add a button plug-in.
Configure the button type as needed.
Locate the desired emoji in any up-to-date emoji site:
Copy the DECIMAL code
Paste the decimal code of the emoji into the button text, making sure it contains all the characters detailed on the website.
It is important NOT to copy/paste the emojis as they appear ( in this case ) and include them in the button text, this would break the button configuration.
Once the response is saved, the button should look like this:
By testing it, you can verify that the code translates to the desired emoji.
The emojis on the buttons can be viewed on Web and asynchronous channels.