If you use the POWER pin type and have
mutliple pins called NC then Capture will join all these pins together
with a power net called NC. The Power pin type is used specifically for
POWER nets. It saves you wiring these up on the schematic. Most people
use this type for VCC, GND etc. Have a look at Capture User Guide
Chapter 14 for everything you needed to know (but were afraid to
Not sure that's the standard way to do
this. Allegro/Cadence has had a great way of handling NC pins for
years and have implemented a more straightforward solution in OrCAD and
Concept. The NC property can be added to the symbol to indentify which
pins are truly NC. In OrCAD you can choose to show these pins or keep
the NC property hidden.
Changing them to NC as POWER is not suggested but it is possible to do.
Have a look at the user guide for NC pins. :)