Hi,
Yes, custom sort. Same syntax as queue sorting.
eg.
+ABC:SortField1,-ABC:SortField2,+ABC:SortField3
If you disable the ability to sort on all columns (this is sometimes appropriate) then you can use default sort order in the [Sort] tab of the browse.
Otherwise, set your date column as the default sort column and set your custom sort for this column to:
-PRE:Date,-PRE:Time
Regards
Bill