Word main title and subtitle layout format?

What is the format of the main title and subtitle layout in a word document?

In the word document, the main title and subtitle need to occupy two lines during typesetting. The main title needs to be arranged on the first line of the entire document based on the middle, and the subtitle needs to be arranged on another line in front of the subtitle. Have a dash and then write the specific content of the subtitle. Relatively speaking, the subtitle should be further to the right.

You first write the main title, then write the subtitle on a new line, and then select the main title. When you see an A sign on the left side of the word, starting with "Text", you click the drop-down and select "Title 1" , select the subtitle, and select "Title 2" from the drop-down menu.