The process by which WordPress selects the appropriate template file to display a particular type of content is referred to as “Template Hierarchy” in WordPress. The order in which the template file to use is determined by the type of page being requested.

Follow these steps to customize themes with the Template Hierarchy:

1.Choose the template file that you want to change. Look for the single.php file in your theme, for instance, if you want to modify the single post view.

2.Establish a child’s theme: Before making any changes to the template files, it is advisable to create a child theme. When the parent theme is updated, this guarantees that your modifications will not be lost.

3.In your child theme, make a new template file as follows: Create a file in your child theme directory with the same name as the template file you want to modify to override it. Create a file called single.php, for instance, in your child theme folder if you want to modify single.php.

4.Alter the format document: Make the necessary adjustments by opening the newly created template file in a text editor. To alter the template’s appearance and functionality, you can modify the template’s HTML, PHP, or WordPress template tags.

5.Upload the modified template file after saving it: Save the file and upload it to your child theme directory to replace the original template file after you have made the necessary adjustments.

6.Update the page: Refresh the page to see the changes take effect after uploading the altered template file. The child theme’s custom template file will be used in place of the parent theme’s original template file.

You can effectively customize various aspects of your theme to meet your specific design and functionality requirements by comprehending and utilizing the Template Hierarchy in WordPress.