[Brian]

Happy to help! "Focus On" is available under the View menu; if it's not active, maybe you're in Context mode? (Focusing means "only show me actions from this subset of my projects".)

Just select one or more projects in the sidebar, then use the command. When you want to pop back to your full project list, use the "Show All Projects" command - when you're focused, that menu item replaces Focus On.

Hope this helps!