If you want to schedule a post to be published automatically later, you will be able to do it through the dashboard.
Please click on the arrow down next to the Post. Click on Schedule post.
If you want to pass the post that you created for a review to the editor. You will be able to Save as a draft first before it goes to live.
Now, if you want to change anything to your Schedule post and/or Draft, you will be able to find them at the Draft tab.
There are 3 options in this tab:
Send Now: To send any of your schedule posts or draft right away.
Edit: To edit your draft or schedule post content, as well as the scheduled time.
Delete: To delete your schedule post and or draft post.