Go to Settings -> Sales Channels -> Shopify Chat -> Enable it
Obtain your Shopify Chat API key by going to Settings > Sales Channels > Shopify Chat, and then click on the "View API Key" button.
Integrate the Shopify Chat API into your custom frontend using the documentation provided by Shopify. The Shopify Chat API allows you to control the appearance and behavior of the chat widget, as well as handle events and interactions with the chat widget.
Once you have integrated the Shopify Chat API or a third-party plugin into your custom frontend, the Shopify Chat icon should appear on your frontend, allowing your customers to start chatting with you.
Hope this will be helpful.
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