NZXT CAM
You can download the CAM software from the official NZXT support page.
Just like in the past the CAM software can be used to monitor your PC, give you its specs and of course control its OC and cooling (when compatible devices are present).
In this case it can be used to control the 2 ARGB LED strips and assign one of the 22 available effects.
Of course, you can also adjust the colors, direction and speed of each effect.
Worth mentioning is that if you own other NZXT compatible devices you can sync the effects with those as well and you can control attached fans.