Merging 2 shots into 1

Hi guys, so I just got Natron, coming all the way from Hitfilm Pro (I’m using a low end pc now). On Natron, how would you deal with masking a Camera Lock off shot where you have 2 shots that you need to merge into one shot? Can anyone recommend even a useful tutorial for something similar? Thank you

Hey! I’d love to help. Would you mind explaining a bit further what the problem is? When you say merge shots, you mean sequence them one after the other, or blend them together? Cheers!