Have you looked here?
https://gard-pro.gorgias.help/en-US/messages-calls-and-sms-796717
When I queried Google, this was the response...
You have consulted the manual, correct?
https://d2um2qdswy1tb0.cloudfront.net/product-manuals/Bar-48_Manual_v07.pdf?v=1611775540