Once you have gone through all the steps of the post creation, you can complete the creation via the button at the bottom right of the "Promote" step or via the button on the post under "Posts".
Depending on the defined publishing of the post ("Publish" step), the button to finish the creation shows "Publish now" or "Schedule for publication". With "Publish Now" the post is processed immediately and then changes to the "Published" status. With "Schedule for publication" the status changes to "Planned".
Scheduled posts are automatically processed by adhook as soon as the time for publication is reached. After publication, the status changes to "Published" or, in the case of posts to be published manually , to "Being processed manually".