1. Log in to your Tumblr account, Select a "BLOG/CREATE NEW" then "EDIT".
   
2. Add chatwing with 2 columns pages. Search for a theme with 2 columns
   
3. EDIT theme, Go to the "DESCRIPTION" Copy the chatwing code (use iFrame) then paste on the description form and click "SAVE"
   
4. Add chatwing on the post pages. Click "TEXT "and copy the chatwing code (use iFrame) then paste on the "TEXT BOX "and click "POST"
   
5. "VIEW" your site, and change the chatbox if necessary.
   

Video