If you edit content in a non public area you can move it to a public area without copy paste. Click the gear icon next to the title of the content and you will see a dropdown list of pages for which you have edit permission so you can move the content to a different page (any page you have edit permission on). Presumably, the author might not have this permission on the public pages so he can't move it but someone with permission can. So when the author tells you its ready you review and if satisified move it to the public page.
Alternatively it can also be published from the Content Manager by users in the Content Administator role.
Hope it helps,
Joe