Check your nsrmm man page. Command will be something like nsrmm -o (mode) -S <ssid> I think the only modes that apply to an invidiual saveset are suspect and not suspect. You can do this from the Windows GUI by choosing the volume, double-clicking to display the savesets, then choose change status. Procedure similiar for Unix
However, these are modes and not ssflags as you requested. I believe you can't change these, as they are "results". The only flags I think you might be able to effect are the purged and eligible for recycle ones, by using nsrmm -e to change browse/recycle, then the "results" would change
Cheers
pt