Click 
(Sort Discussions) and then select (
) one of the options.
Filter the discussion, as desired.
Click (Sort Discussions) and then select () one of the options.
The results are determined by the combination of all the filter options and the sort selection.
Numbers, such as segment start times
Symbols (*, $ and so on), if any
Letters (alphabetically).
Latest Updated sorts discussions by the time-stamp of the most recent comment.
Assigned To sorts by generally by peer groups and then by names of team members.
The blue dot (
) indicates that there is a sort other than Topic, which is the default sort.