Log in to your Weebly account, Select a "BLOG" then "EDIT".
Look for place where you want to put your chat box, Chatwing allows live chat for website free. Above of the Screen, you will see a TAB, click "BUILD" on your left side, Scroll down and look for "EMBED CODE".
Click & Drag "EMBED CODE", copy the "iFRAME code" on your chatwing account, Paste it on the Weebly and Preview it, Adjust the size if necessary.
View your website after publishing and enjoy chatting with friends and visitors.