In the Lightning App UI, I'm working in a Case Record Page (Page Type = Record Page, Object = Case), that looks like this:
I want the left and right panels (the case info and knowledge search) to be collapsible so that the middle section can be full width if desired. How can I accomplish this?
Can I create a custom page template (currently you can see it's using the "Three Regions" one)? Is there a better way?