Select the text, and then on the Home tab, in the Font group, click the Font Dialog Box Launcher (the arrow in the lower-right corner).To apply small capital (Small Caps) to your text:

To shift between two case views (for example, to shift between Capitalize Each Word and the opposite, cAPITALIZE eACH wORD), click tOGGLE cASE.

To capitalize the first letter of each word and leave the other letters lowercase, click Capitalize Each Word.

To capitalize all of the letters, click UPPERCASE.

To exclude capital letters from your text, click lowercase.

To capitalize the first letter of a sentence and leave all other letters as lowercase, click Sentence case.

On the Home tab, in the Font group, click the Change Case button.

Select the text for which you want to change the case.To change capitalization (or case) in Word, follow these steps: You can change the capitalization, or case, of selected text in a document by clicking a single button on the Home tab called Change Case.

How do I capitalize (or uncapitalize) text in microsoft Word?

How to clear source formatting in word