How to modify the author of a post in WordPress?

I need to change author of a post in WordPress but unable to find where to change it. Could you please help? – Linda

There are two scenarios you may be looking for. Customize the display name of an author so it is seen as something else. Another scenario is that you have a multi-author wordpress installation and you wish to switch author from Author1 to Author2.

Customize author display name in WordPress

1. Login to your WordPress admin dashboard.
2. Go to the top right corner and hover the mouse above your name.
3. In the menu click Edit My Profile.
   
4. Type your First Name, Last Name, Nickname.
   
5. In the Display name publicly as dropbox, select your desired name.
   
6. Click Update Profile at the bottom of the page.
   

Switching author of WordPress post

1. Login to your WordPress admin dashboard.
2. In the menu click Posts > All Posts.
   
3. Hover your mouse over the post you wish to modify.
4. Click Quick Edit.
   
5. In the Author dropbox, select the desired author.
   
6. Click Update.