Final answer:
To insert a header with a filename and sheet name in Microsoft Word, edit the header and add the filename using the 'Field' function and type the sheet name manually, aligning them accordingly. For hanging indents, format the text using the 'Paragraph' dialogue box with the 'Hanging' indent option.
Step-by-step explanation:
Inserting Headers in Microsoft Word
To insert a header that contains the filename on the left side and the sheet on the right side, you should access the 'Insert' tab in Microsoft Word. Then, click on 'Header' and choose 'Edit Header'. You can insert the filename by selecting 'Quick Parts' > 'Field' and then choosing 'FileName' from the list. For the sheet name, since typical Word documents do not have sheets, this might be referring to a section name or similar, which you can type manually. Make sure to align the filename to the left and the sheet or section name to the right. To close the header, simply double-click on the body of the document or click on 'Close Header and Footer' on the design tab.
When formatting your document, to create a hanging indent, you'll need to highlight the text you wish to format, right-click and select 'Paragraph.' Under 'Indentation' select 'Special' and choose 'Hanging' from the drop-down menu.