Originally Posted by Unregistered

Between AD and DD lor. But generally EOs won't hold Senior AD, Senior DD etc which you may see some young Administrative Officers holding in some divisions.

Have a look at the staff lists in SGDI - look at branches in MOE HQ which consist almost entirely of EOs (e.g. LPET in ETD, SCSB in CPDD1, etc.). You don't see any SAD or SDD at all.