How to import jpegs as scenes that automatically FIT into frame?

I am freaking out on a deadline, and since I haven’t used SBPro in a long while. Before, I would import ‘images as scenes’, and the images would automatically fit WITHIN the designated frame parameters. But not now, and likely because I’m not at all remembering how to do this.

I’m sure this is something simple. But I’m burning precious time trying to find a solution, before I have to manually resize a billion frames (okay, a million).

Can anyone give me any specific directions on how to automatically import images as scenes, where they automatically fit into the resolution? HELP, PLEASE?

I’ve attached an image to be redundant.

THANK YOU.