Select and highlight all the desired operations in the Operation Navigator with either the Shift or Ctrl key. Next, right-mouse button select them and select Object-->Feed Rates...
The Feeds and Speeds dialog will appear. Set the feed rate or spindle speeds you desire. Upon selecting OK all highlighted operations will accept the new settings.
If by "Programs" you mean different NX parts, you can record/edit/then run a Journal to automate this.
It is "non-trivial", but it can be done.
Production: NX10.0.3.5 MP16/TC11.2
I'd rather be e-steamed than e-diseaseled