Panorama, is there a way to force LR to use a particular photo as the hero shot to build around?

I got few panorama shots in which my prefered photo just need more background from the previous or next shots, but everytime I create Panorama, LR use my least favorite shot as the main picture and build the rest around it.  Besides of Photoshop, is there a way to force LR to use one particular image as the main canvas to build the panorama around it?