Please follow the steps below:
1) Launch Logic Pro, go to ‘Logic Pro -> Preferences -> Audio Units Manager’.
2) Make sure BIAS Pedal is in the list and the check box is ticked.
3) If BIAS Pedal is not in the list, but the file “BIAS Pedal.components” does exist in the location '/Library/Audio/Plug-ins/Components/‘, please try the the steps below : (If you don't see “BIAS FX.components” in the location 'Mac HD/Library/Audio/Plug-ins/Components/‘, that means BIAS FX plugin is not installed on your Mac, please run the BIAS FX Plugin.pkg to install the plugins)