Want UTM and Lat/Lon in decimal seconds displayed

Our SAR unit uses UTM and the Helo support uses Lat/Lon in decimal seconds. I would like both of them displayed.  I can choose either one of those for position format, so I know they are all available. On the map page I can set up data fields.  If I set up UTM for position format, then one of the data fields has UTM.  Another data field allows me to choose Lat/Lon, but there are no choices as to how the Lat/Lon is displayed - it defaults to decimal minutes. If I pick Lat/Lon in decimal seconds as the position format, then one of the data fields has it correctly.  In the second data field there is no UTM choice.  Maybe someone more tech savvy than I can figure this out????