Rounding up Dimensions

Hi Don,

 

This is up your alley. I am sorry but I am just being lazy. I've scoured the help and dimension settings box, but I cannot find how to round up a dimension style to the nearest 5mm - as the ones do in the attached file. Please tell me where to look. There are too many settings. Many thanks.

 

Lincoln

Dimensions to the nearest 5.dwg