• Data Validation
    • Setting Validation Rules: Creating rules to ensure data integrity.
    • Custom Validation: Using formulas in data validation.
    • Error Alerts: Customizing error messages and prompts.
  • Protecting Data
    • Worksheet and Workbook Protection: Protecting cells, sheets, and workbooks.
    • Password Protection: Setting and managing passwords for Excel files.
    • Permissions and Sharing: Managing user permissions and sharing options.