This question is in reference to Atlassian Documentation: JIRA FAQ
I'd like to add a custom field for the validator. This has to be a field that can be set like the Reporter or the Assignee field. The only option in adding an user field is of Type UserPicker. This does not look the same and is less userfriendly. It has to be 'Select list' type with auto-completion.
Is it possible to create a field like this, and how?