If auto-reboot is checked in Odin3 it will reboot to recovery once on its own after the flash, you can watch and it will happen.1. U meam to say after flashing NC5 and rebooting to normal mode
If you forget to check auto-reboot just power phone completely off after the flash and power up once with vol+home+power. You will see android guy and a progress bar, or similar for a few seconds then it will reboot to system software. Your menu items will be present now.