Welcome to the Atlassian community! In order to add a custom field, you can follow the guides in the links below. Not sure if you use CLoud version or Server, so I included both. Let us know if you have any other questions.
Add a field on server version: https://confluence.atlassian.com/adminjiraserver/adding-a-custom-field-938847222.html
Add a field on cloud version: https://confluence.atlassian.com/adminjiracloud/adding-editing-and-deleting-a-custom-field-776636410.html
Does this answer your question?
Hola edwin muchas gracias por tu respuesta.
Realice esos puntos que menciona en la version de la nube, el problema se presenta ya que no aparece la opción de la pantalla de jira service desk JD.
Esa es la razon por la que no he podido agregar el campo.
Meet the new and improved IT service management template for Jira Service Desk! Here are a few of the powerful features ready and waiting for you: Better focus on ITSM - clear ticket categories...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events