You can add comments to a presentation that act like sticky notes. These notes can store information or to-do items related to your presentation. These notes appear while editing your slide, but are invisible when presenting the slideshow.
Select slide 3 in the slide organizer.
Click the Comment button in the toolbar to add a comment to the slide.
A virtual sticky note is added to the slide.
Click inside the note and add the following information: Check most recent numbers in report.
To make the note stand out even more, you can change its color
Select the Graphic Inspector.
Click the Fill color well to load the Colors window.
Choose a Red color for the note. Then close the Colors window.
If you want to permanently get rid of a note, click the X in the upper-right corner of the note.