How to set 12 hours time while creating work shifts

Summary:

I created work shifts with time 9:00 to 18:00.

But I want it as 9:00 AM to 6:00 PM. How to achieve it?

Content (required):

This is what I want

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):

But I am getting this