I am trying to 4K footage on a 1080P timeline and want to have the larger clip to be to zoom in (like in this video ) but it's just looking like regular size HD. I can do this in Resolve.
I meant the video Fx called Crop. That said, I just looked at your video and don't think it's what you need.
Try Picture in Picture for more intuitive controls than pan/crop. You can move and drag your footage in the preview window to exactly where you want it.