When you add a frame or theme to a photo project, frames appear with a blank (gray) area for the image. Click and drag an image from the Project Bin to the blank area.
Click the Filter For Themes or Filter For Frames icon.
Choose from the category menu (for example, Event or Activity, and choose a subcategory (for example, Baby or Cooking).
Select a thumbnail and click Apply.
Double-click a thumbnail.
Drag the thumbnail to the blank background.