Hey ztig. Thank you for answer.
I believe what you told me to do was create a custom field and connect to Post … but unfortunately does not work for me.
I need to “hook” the existing type of post in the subject field. But do not know how to “hook” these fields and transfer to the WP User Frontend.
Must be so because many fields of this issue has options to query / filter in a widget.
Please, I just need it to finish my project. I really appreciate your help.