SharePoint Task Pane Add-In Publishing

Hi Everyone

I have developed a custom task pane add-in for SharePoint Online(Word) and got stuck in Publishing the Add-in SharePoint in a Organizational Level. I tried the following methods.

1) Publishing it in the App Catalog (Using Manifest.xml file).

2) Publishing it using the Integrated Apps using the manifest file.

Please post your thoughts about this and help me with publishing the Add-in

Thanks in advance