Dual camshaft sensors and crank corraletion

I have a 2 channel pico scope and was wondering about doing a known good cam and crank correlation on my vectra c which is a 1.8 VVT z18xer engine.What would be the best approach ? Do one camshaft sensor and crank sensor first and save that waveform and then do the other camshaft sensor and crank sensor after and save that? Do i need to do anything different with it being a VVT ENGINE ? I do have an 8 channel hantek scope but prefer the pico ,just a bit limited with it being 2 channel.