When using Photo Montage in Final Cut Pro, a sidebar in the image configuration window lets you browse all libraries on your system:
Within the events in each library, only files compatible with Photo Montage are listed.
Drag any files you wish to animate from the sidebar to the main list. You may also double-click each file to add it to list, click the button below the browser to add all selected files to your animation.
To locate a specific file anywhere in your libraries, type any known portion of its filename in the search bar:
When filtering its contents, the browser displays only files that match the given keywords.
Remaining functionality is otherwise identical across all supported video applications: