Launch Custom Code Editor
Copy and paste the below script into the <Head> field. Scroll down and click Save.
Paste Script In <Head> Section
After opening any Article, Forum or Blog post, switch over to the HTML Editor. Copy and paste this block of code in the editor, and then click Publish.
You Will See The POWr Tumblr Feed Plugin
Start to edit your Tumblr Feed Plugin:
Visit the live Ning web page and click the gear icon in the top right corner of your Tumblr Feed Plugin.