Hi Kevin
Go to the setup Menu
Set up System, Unit, Position Format & Time
Tracks: turn on/off current track
Map: change map settings.
Position Format (including Map Datum) should be set to the communication format for the incident.
For Latitude and Longitude options are:
Degrees Minutes Seconds (DMS)
hddd°mm’ss.s”
Decimal Minutes (DM)
hddd°mm.mmm’
Decimal Degrees (DD) (rarely used)
hddd.ddddd°
I also included a file of "GPS Pocket Guide GPA map 62" this is in power point.
...
GPS_Pocket_Guide_GarminGPSMAP62_GTU_2013.pptx
Hope this helps