Hi, I really need your help. I recently switched from the 60d to the 70d (18-135mm) because I wanted a camera that had autofocus for my beauty videos. One problem, I cannot seem to find the "AF Operation" Screen. Also, my camera stays on One Shot (Picture mode AND Video mode) also, I am using the back monitor. I press Q button on the screen and it doesn't give me the "AI SERVO or AI FOCUS" options. Do I put the camera on a specific mode? (Video/Picture mode? Manual, AV, TV? I am trying to set my camera for autofocus for my videos so whenever I place a product in front of it, it can focus by itself and refocus on me whenever I put it down. The autofocus button on the lens is already switched on as well. No idea what I'm doing wrong. Thank you so so much!