Hold down the Ctrl key as you shorten the duration of a clip using the mouse cursor. That should give you the gap that you seek. That works for Premiere Elements Windows. (I am strictly an Elements Windows user.)
With your Premiere Elements Mac computer, try holding down the Command key as you shorten the duration of a clip using the mouse cursor.
Please let us know if that worked for you.
Thanks for the the tip. That does help but ideally what I'd like to do is for Elements to behave like it does with the ctrl (or cmd in my case) key held down as default rather than having to have to remember to hold down a key when moving things about. Do you know if there's any way to change the default way of working in PE 13?
I have not found a way to do what you want without the keyboard modifier Ctrl in my Premiere Elements Windows computer environment.
In Premiere Pro, what are the steps that you are going through to shorten the clip and create the gap, without holding down a keyboard modifier?
There is also the option of editing your video on a track other than Video 1.
As I show you in my book, Video 1/Audio 1 are set to ripple by default. Video 2, Video 3, etc., are not.