The WhatsApp Chat WordPress plugin allows you to add product experts or sales agents' WhatsApp contact buttons to WooCommerce product pages.
From your admin dashboard, go to WhatsApp > Settings > open WooCommerce Button tab.
Enabling the option and you can set up the WooCommerce WhatsApp button in a few clicks.
Choose placement: pick where you want to put the WhatsApp button
Before Add to Cart button
After Add to Cart button
After short description
After long description
Choose accounts to display: pick one or more agents from the dropdown list
Save changes and you're all done!
Visit any of your WooCommerce single product pages and you'll see the WhatsApp button inserted like this.
If you want to edit the design or greetings text of this WooCommerce button at the agent individual level, please see Customizing WhatsApp contact button.
After placing multiple WhatsApp members with different working hours and greetings text on the same WooCommerce page, here's how the set of buttons look like.