I need to add custom field "developer" in jira. To see who was working on this ticket when (for example) we return back ticket from QA to "need fixes". The same as "assignee", but additional. I saw that I can add custom field - but standard "user picker" field doesn't work for me - I have to specify the exact nickname, cause this field doesn't have search. Are there any options for me to add this kind of field?