Buffer doesn’t send posts right away

Good morning and thank you for reading my perhaps for the experts a bit silly question. I just installed WP to Buffer on my site and not seeing the posts published on social and being sure I configured the plugin properly, in my ignorance as a layman of this plugin I did some research. From what I found on the plugin site I gather that the posts are not published right away but are scheduled. I would like to know if I have understood this correctly. Thank you.