Once you publish a post you can send to a post to Facebook. You must first set up a Facebook account. We have an article describing how to do that here.
After a post is published, you will have distribution options on that post's page. Scroll down and expand "Promotion". Click "Promote to Facebook":
A Facebook text area will pop up. Select which account you would like to use to send this post:
Note: If you would like to include the post's URL in the message, type [url] where you would like it to appear within the message and Kapost will automatically change [url] to the post's actual URL. If you would like to delay sending the message, click "Send at specific day and time". Here you will be able to schedule a post:
Once you are ready to send the message, click "Post". You're all set!