Retrieve Data Dynamically: Connect to the source SharePoint list dynamically within your web part code. Use SharePoint API or SharePoint Client Object Model to fetch data based on user-defined parameters or conditions. Display Data in the Web Part: Design the user interface of your web part to display the fetched data. Utilize SharePoint controls or custom HTML/CSS/React JS to present the information in a user-friendly manner. Implement User Interaction: Allow users to interact with the data within the web part. This could include editing, adding, or deleting items based on user actions. Implement appropriate controls (buttons, forms, etc.) for users to modify data. Save Data to Master List: Create functionality to save the modified data back to the master SharePoint list. Use SharePoint API or SharePoint Client Object Model to update or add items to the master list. Handle Permissions and Security: Ensure that your web part respects SharePoint permissions and security settings. Implement appropriate authentication mechanisms if required. Test the Web Part: Thoroughly test your web part in a development environment to ensure it functions correctly. Address any issues or bugs that may arise during testing. Deploy to SharePoint Site: Package your web part and deploy it to your target SharePoint site. Ensure that it's added to the desired pages or locations within the site. Document and Maintain: Document your web part, including usage instructions and any configuration options. Regularly maintain and update the web part as needed.