How to make salutation a required field?

How to make salutation a required field?

Our customer communication uses the last name. So, our emails and letters start with Dear [salutation] [last name], e.g "Dear Ms. Johnson." We constantly forget to set up a salutation and the result does not look good: "Dear  Johnson." How can I make the salutation required? The field first name is already required. 

Thanks
Ligia


Moderation Update:
We have another post in the Community around the same need to remove/hide the Salutation field. I am locking this post. Please follow the below thread to join the discussion and stay updated on the progress.
https://help.zoho.com/portal/en/community/topic/deleting-salutation-field