The Tray allows you to quickly create temporary collections from your media assets. It is recommended that you use the Tray only when you want to make a one-time collection, without the need to flag and tag all the items.
Launch the Tray from the File menu via Window -> Tray.
In the tray, you can sort items manually, open them in full-screen view, export them or print them. By default, the tray is located at the bottom of the browser window. You can freely change the position of the Tray window or dock it to a specific area – see Customizing the Window Layout.
Add items to your collection by simply dragging them into the Tray window. Alternatively, you can use the Ins key. Press the key once to copy the selected item to the Tray. Press the Ins key a second time to remove the item from the tray.
You can also remove items from the Tray by pressing the Delete key, or by right-clicking the item and then clicking Remove from Tray in the drop-down list.
When you add items to the tray, they are displayed in a different window and highlighted by a green frame. This is to remind you where the item is actually located.
In the browser window, if you click an item that has been added to the tray, a green frame appears around that item in the tray window. Conversely, when you click an image in the tray, the corresponding image is shown with a green frame in the browser window. This allows you to see at a glance whether or not a particular image is already in the tray.
In the right corner of the tray title bar, there is a small gear icon. This Symbol allows you to choose between two display modes in the tray. These are: Filmstrip and Thumbnails.
In the Filmstrip mode, the thumbnails are displayed without additional metadata information and you can only move the filmstrip horizontally.
When using the Thumbnails mode, the thumbnails are similar to the ones in the browser. Ratings and color labels are additionally displayed and the scroll direction is vertical.
You can also put all items into a collection (you will be prompted to enter the name of the collection) or clear the Tray in one click.