Select Field with Options Group Name

Hi There,
Is that possible to added optgroup name to select field box?
I have example from html, let’s say…

<select name="myselectbox">
   <option value="please select">
      <optgroup label="this is group one">
         <option value="groupone_one>
         <option value="groupone_two>
         <option value="groupone_three>
     <optgroup label="this is group two">
         <option value="grouptwo_one>
         <option value="grouptwo_two>
         <option value="grouptwo_three>

Any help will be appreciated.

Please create an issue for this feature request:

PR exist

merged and will be in the next admin release (out soon!)

done, like a charm, thanks for the new update.