First you need to setup WP Postly by clicking Settings in the menu.
Add credentials to services:
Setting up a new campaign is very easy. Click Add New in the menu to begin.
Add a descriptive title (for your reference).
Add campaign keywords (this is what will be used to source articles from Big Content Search and media from Big Media Scraper).
Enrich articles checkbox will add media (YouTube, Flickr), bold keywords, add headings and add an italic sentence. This is done by Big Media Scraper.
Select Spin Rewriter's confidence level for spinning.
Choose posting frequency and new post status.
Select the categories you'd like the posts to be added to (these are existing WordPress categories).
Click button Publish to start the campaign.
You can pause it from the Campaigns menu by clicking stop.