Slip edit numerically.

Wow, what a real bummer to find such basic edit functionality missing and in its place is a cumbersome multistep process. Please add what Avid has had since forever.

Thanks very much. Yup, that worked. Not at all efficient (to me, anyway). Sadly, inefficient seems to be far too common in Premiere. 

I appreciate the reply though. At least I know it CAN be done.

You need to select both the inside trims, using shift-cmd and click. Then once they're selected your nudge keys, or entering a numerical value will slip the edit.

Thanks but Trim mode doesn't help with slipping footage since the edit itself isn't being changed/moved.

Have you worked with Trim mode for this kind of thing? Just curious.