Once you have successfully installed the extension, go to System → Configuration to configure the extension for use. Here you can find following settings:
• WhatsApp Contact: Option to enable or disable the extension.
• Enable Only in Mobile: Set YES to enable contact button only in mobile phones.
• WhatsApp Contact Button Background Color: Select background color for the WhatsApp Contact button.
• WhatsApp Icon Color: Select icon color for the contact button.
• Top Position: Add pixels to set top position of the contact button.
• Left Position: Add pixels to set left position of the contact button.
• Right Position: Add pixels to set right position of the contact button.
• Bottom Position: Add pixels to set bottom position of the contact button.
• Button Animation Effect: Select animation effect of the contact button.
• Mobile Number for Contact: Add mobile number to contact when users’ click button.
• Default Message: Set default message when users’ contact through WhatsApp.