Adding WhatsApp to website

[#1]

Hi there,

Is it possible to add the WhatsApp to my square website, where customers can directly click on a button or link to send me a WhatsApp message? This is very handy since most people use their mobile phone for browsing and inquiring.

I do have the code, but not able to figure out where to add or embed the code.  It would be ideal to be able to add it in the footer.

Thanks,

Jasbir