I think I understand....You want to fill in details (different each time?) into boxes already marked out on the form?
My way (probably long winded) would be to make a Word template out of carefully placed tables (say single cells with unprinted borders) and use this template for data entry.
The most time would be spent arranging these tables in the template to match the position and size of the boxes on the form.
Then having made the template just right, save it as a document file (My Form.doc)
Print as many blank forms as you are likely to need for the present and use these like headed paper when you come to print out the data which you have just entered on a copy of My Form.
Obviously make a duplicate of 'My Form' somewhere safe in case of accidents! Because if the printed paper is all you need, don't save the changes to your standard data entry (My Form.doc)once it is printed.