Text boxes are easy to add and edit in Storyline. You can add text boxes to any slide, including Slide Masters and Feedback Masters. Here's how to do it:

  1. From any slide or slide master, click the Insert tab.
  2. Choose Text Box.
  3. Click and drag on your slide to draw a text box the size you want.
  4. Type some text in the text box. (Or, if you've previously copied some text to your clipboard, you can place your cursor in the text box, and then paste by pressing Ctrl+V or by right-clicking and choosing Paste.)
  5. Now that you've got your text box on your slide, there are a bunch of things you can do to make it look the way you want: