1. Open a new Excel workbook. 2. Click on the "+" icon at the bottom to add a new sheet. 3. In the new sheet, label the columns as "Task", "Assigned To", and "Due Date". 4. In the "Task" column, list the tasks you want to assign. 5. In the "Assigned To" column, input the names of the persons assigned to each task. 6. In the "Due Date" column, enter the dates by which each task should be finalized. 7. To make it easier to track, you can format the "Due Date" column as a date format. 8. You can also use conditional formatting to highlight tasks that are overdue or nearing the due date. 9. Save the Excel sheet with a relevant name for easy access. 10. Update the sheet as tasks are completed or if there are any changes in assignments or due dates.