There’s a great shortcut in Premiere Pro CC that allows you to add and edit a Marker more quickly.
Use this anytime you want to add a series of photos to your timeline.
In the Timeline or Source monitor, just tap M M (that’s two M’s quickly in a row).
A new marker is added and the Edit Marker dialog box opens.
You can now add notes or comments to improve communication between those working on a project, or just leave a note so you remember important project details for yourself.