VBA Macro Writer

Write a VBA macro for Excel that does the following:

**Task:** {{describe_the_automation}}
**Sheet(s) involved:** {{sheet_names}}
**Range:** {{range}} (e.g., "A1:D500" or "Column A, all rows with data")
**Trigger:** {{trigger}} (e.g., "button click", "workbook open", "cell change")

Step-by-step workflow:
1. {{step_1}}
2. {{step_2}}
3. {{step_3}}

Requirements:
- Include error handling (On Error GoTo)
- Add comments explaining each section
- Show a message box when complete with a summary
- Handle the case where the sheet or range is empty

Format the code so I can paste it directly into the VBA editor (Alt+F11 > Insert > Module).