If you'd like to add multiple buttons to the same page, you will need to assign a custom id to each additional button element that you add and then include that id at the end of the URL in the script tag. For example:
Example of Code Snippet for Additional Button:
Replace "teachworks-booking-button" with a different ID and then include it at the end of the URL in the script:
*In the example above, the custom id is "teachworks-booking-button-extra", but you can set this to anything that makes sense to you.