People picker search result cut off inside panel

Hi,

I have placed people picker inside panel(will show up when specific condition meets). But search result will cut off inside panel when I try to search people.

I have tried using below codes but none of them works out.

1. z-index: 510 !important;

2. NWF$(document).ready(function () {
NWF$("div[formcontrolid='']").css("z-index", "0")
});

3. fieldset.panel-clear>div {

overflow-x: inherit !important;
overflow-y: inherit !important;
}

fyi, I am using Nintex form 2010

Regards,

Chaithra