If you have multiple site plans or multiple stories requiring North Arrows and need to ensure your project north is always consistent (I know not usually a big deal…), there are three simple steps to get your 2d symbol to stay constant.
First set project north, Under the ArchiCAD drop down: Project Preferences>Set Project North.
Second set project north, think of this like a rotate command. I use a survey for best accuracy, but for most projects a screen shot of google earth or google maps will suffice if a survey is not available.
Last go to the settings for ArchiCAD’s north symbol and check the box for the symbol to follow project north.
I see a lot of designers ignore ArchiCADs settings for location and environment controls. The software has great abilities to analyze local conditions dependent on longitude, latitude, altitude, orientation, time, day, month, etc. Learn them, you never know when an accurate sun study is going to really sell the design.