Here's how to use the Instagram grid preview to visually plan your content and schedule your posts:
You can preview your Instagram grid by uploading a new draft or visiting an existing draft on the Drafts page
Once on the draft edit page, scroll to the bottom of the page and you will see Preview Your Grid
Any posts that have been scheduled will show in chronological order at the top of your grid preview. Scheduled posts will display a bar showing the date and time that they are scheduled