Camshaft A and B actuator location and replacement instructions needed

Hello,

I’m trying to see where these are located at on my vehicle. Talking to one mechanic he was speaking on removing my wheel plus the serpentine belt in order to replace the sensors but every video I come across I’m not witnessing them remove any of those things. It is not quite be my vehicle but close. Please help telling me where they located and how to replace. Thank you