Currently you are only able to add notes once you've either sent a post for approval, or after the fact when it's been approved. When you are working on a draft post (or several) and are waiting for additional information, (pictures, content, etc.) it would be nice to be able to add a note as you're working to be able to reference. I often look at my calendar and wonder why something is in draft and have to make manual notes. If this is added, you'll have all of the applicable notes right there and available. This would also help when numerous people are in the platform so everyone could see the notes and add their own. It would make the workflow process a lot smoother, especially in instances where posts are being reviewed prior to posting and you're posting your content for a longer period of time.