placeholder that isn't one of the standard text placeholders in a layout. To do this, add the new text placeholder and then add your custom prompt text.
1.On the View menu, in the Master Views group, click Slide Master.
2.In the left pane that contains the slide masters and layouts, click the layout that you want to add a text placeholder and custom prompt to.
3.On the Slide Master tab, in the Master Layout group, click Insert Placeholder, and then click Text.