Final answer:
To add the file name and date to a worksheet, access the header and footer editing sections through the 'Page Layout' or 'View' tab and insert the appropriate placeholders.
Step-by-step explanation:
To add the file name as a header to the current worksheet, you will need to access the header and footer tools in your spreadsheet software. This is generally done by going into the 'Page Layout' or 'View' tab, selecting 'Header & Footer', and then choosing to edit the header. There, you can insert a filename placeholder which will automatically display your current file name.
Similarly, to add the current date to the left side of the footer, access the footer editing section following the same steps. Once in the footer editing area, you'll want to insert the current date placeholder. Most programs will update this automatically whenever you open the worksheet, ensuring that it always displays the current date.