size pic in pic in replay

Hello Jane, 

Thanks for reaching out! 

There isn't a way to resize the Picture-in-Picture quadrant in Replay 360, but you can design a similar effect in Storyline 360 by adding your videos to a slide and then publishing it as a video. 

I’ll be happy to pass your requirements on to our product team, but you can also feel free to detail them more through a feature request!