Calibration of Kickr Rollr to power crank arm

Hi, I have recently had a power crank arm (left) installed on my trainer bike. Do I need to calibrate it to my Kickr Rollr or is any form of calibration of the smart trainer required to pair with the power crank arm for use on Zwift? Thanks for your help.

@adamreed I don’t think the trainer needs any calibration as it doesn’t have a power meter but I would suggest following the instructions that came with your crank based power meter which may require a zero offset before riding.