X1 allows you to sort results on multiple columns simultaneously.
For single column sorting, simply click the head along the desire refine column (i.e. where the words To, From or Path appear) and your results should be sorted appropriately.
After you perform your first-column sort, hold down the Shift key while clicking the additional column headings. X1 allows you to select up to two additional columns (for a total of three).
For example, you could first sort your data by "From", then hold down the Shift key while clicking on the "To" column header, then the "Date/Time" column header. To return to sorting on a single column, simply click the applicable column header.