1. Take the directory in word as an example.

2. First, select all the directories, and then click Paragraph Settings according to Step 2 of the red arrow below.

3. Then click the tab stop on the pop-up paragraph setting page.

4. Then in the pop-up tab stop dialog box, follow the steps indicated by the red arrow in the figure below, enter 38 in the tab stop position, then select right alignment for the red arrow 2, and select 2...(2) For the red crop head 3.

5. Then go back to the previous directory, put the cursor in front of the page number, and then click the tab key, and the page number will be automatically aligned.