Hi, i have a WS2811 Ledstrip (5 meters,

Hi, i have a WS2811 Ledstrip (5 meters, 12 Volts) that i have wired up to my Arduino Yun,
its working nicely, but now i want to add a WS2811 6 led ring to the same arduino and i want to control these 2 “units” seperatedly from each other, can i just plug the ring to some other pin than the one used by the strip?

Yes see https://github.com/FastLED/FastLED/wiki/Multiple-Controller-Examples