The NX help files cover a lot of ground, I'd start searching there for whatever it is you want to customize. Also, the GTAC user forum is a good place to ask NX setup, administration, and customization questions: https://bbs.industrysoftware.automation.siemens.com/vbulletin/
This site is dedicated to using the NXOpen API via journaling to automate modeling and design tasks. If you have a specific question regarding journaling, please post it.
The NX help files cover a lot
The NX help files cover a lot of ground, I'd start searching there for whatever it is you want to customize. Also, the GTAC user forum is a good place to ask NX setup, administration, and customization questions:
https://bbs.industrysoftware.automation.siemens.com/vbulletin/
This site is dedicated to using the NXOpen API via journaling to automate modeling and design tasks. If you have a specific question regarding journaling, please post it.