Notes are a way for you record some additional information about items within your projects. To view and add new notes, you must be in a project. Notes are specific to the object you are writing about and are neither shared across Projects, nor do they appear on the Item record outside of the Project
First, you’ll need to be viewing your items in one of your projects, or in another project where you have the permission to add notes items.
Click in the text area underneath the item’s picture.
Type your note.
Your note will automatically save, just erase it when you want to delete it!