This video shows how to use the numeric keypad on the extended keyboard to navigate the Premiere Pro Timeline and edit clips more easily.
I have not found these shortcut keys described in the Adobe Documentation or on other YouTube videos.
00:00 Start
00:24 The Extended Keyboard
01:11 Shortcuts for Panels
01:50 Using the Keypad
02:39 Relative movement with plus and minus
03:56 Editing example - open up space
05:40 Navigating in the Program Monitor Panel
06:17 Summary