The data frame coordinate system is WGS 1984. I have one feature class in this map with a NAD83 Albers projection. On the Intervals tab of the properties once the grid is created, the option exists to choose decimal degrees or degrees and decimal minutes yet the apply button is inactive.
Changing the origin to Use origin from the current coordinate system activates the apply button yet the grid does not change from Degrees- minutes-seconds even with a refresh.
So now I've stumbled into the Labels tab. Additional properties allows a choice for Label type. The Label Style Format only gives a choice of DMS.
I've now successfully lost the minutes and seconds and have not gained decimal anything.
Any insight would be appreciated.