How to Get a Vertical Scroll Bar in a List of My Calendar Events

My site was built by GoDaddy using the Beaver Builder Theme with the PowerPack and UABB Plugins.

I need to have a clickable list of my calendar events with a vertical scroll bar.
Ideally the list could show 4-5 events but provide a scrollable bar on the right side so the user could scroll the list up or down.
I’ve tried the “Posts Carousel”, “Post Settings”, “Posts Slider” and a couple others.

Any Ideas?