How can specific form responses be directed to different spreadsheets based on certain criteria?

This is typically achieved using conditional logic within Google Apps Script. The script would evaluate the values of specific form fields (e.g., a 'Department' dropdown, a 'Project Type' radio button, or a numerical range) from the submitted response. Based on these values, it would then decide which target spreadsheet(s) or tab(s) to append the data to. For instance, responses where 'Department' is 'Sales' go to the Sales spreadsheet, and 'Marketing' to the Marketing spreadsheet.