using albums in Imovie
When I select either my albums or albums, the albums display as stacked pictures/videos in the normal albums; favorites, videos, selfies, etc. When I cursor over the stacks they flip through the various pictures videos in the stack but i cannot get the stack to open in the media window so I can select a video. I have seen on YouTube videos people do what I want. I try to click on the stack and it gets a yellow frame but will not expand to show the photos/videos in the album. I am on an iMac with Mac OS Monterey 12.0.1, iMovie version 10.3.1. I have tried most of the advice on the internet close to this issue but nothing so far.
When I use my iPad to do the same thing it works.
Any thoughts or suggestions? Mouse settings? Imovie settings?