Inserting fields (Insert > Quick Parts > Field) can give you precise control over dynamic text in your document. Fields are an important part of Word, but it’s good to know that many fields are inserted for you through built-in commands and features. For example, fields are at work when you insert page numbers or create a table of contents. In these cases, it’s probably simpler to let Word automatically add them for you. Fields are most useful when you need placeholders for data that might change in your document and for creating form letters or labels in mail-merge documents.
These steps work for inserting any field code in Word. For information about a particular field, see Field codes in Word.
Click where you want to insert a field.
Click Insert > Quick Parts > Field.
In the Field names list, select a field name. You can filter the list by clicking on Categories.
Select any properties or options that you want.
To see the codes for a particular field in the Field dialog box, click Field Codes. For some fields, this button is clicked by default.
To nest a field within another field, first insert the outer, or container, field (steps 1-4 above). Then place the insertion point inside the field code where you want to insert the inner field, and repeat steps 2-4 above.
Tip If you know the field code for the field that you want to insert, you can also type it directly in your document. First press CTRL+F9, and then type the code within the brackets.