BCE Diagrams for Desktop App

I have a set of user stories for a desktop application and I need them visualised in Boundary-Control-Entity form. The goal is to translate each story into a clear, moderately detailed BCE diagram that highlights the key boundaries (UI or system interfaces), controls (logic), and entities (data objects) involved.

What I will provide:
• The written user stories and a brief description of the overall desktop app.
• Any clarifications you need about flow or terminology.

What I need from you:
• A concise BCE diagram for each user story (one combined diagram is fine if it stays readable).
• Source file in a common diagramming tool (draw.io, Visio, Lucidchart, or similar) and an export as PDF/PNG.
• Consistent use of naming, arrows, and swim-lane layout so the set feels cohesive.

Keep the diagrams moderately detailed—enough to show relationships and responsibilities, but not down to class attributes or full sequence flows. If you have past examples, feel free to share a sample with your proposal so I can see your style.

Looking forward to working together to get these visuals in place quickly.