so this is what I came up with...
basically the script searches for employees by Supervisor. The resulting found count uses this variable as it goes through each record.
Let ( $list = $list & ¶ & Employees::c_Full NameFIRST & " - " & emp_TIMESHEETS::s_TotalHours;$list)
I create the email with the text "These are your employees total hours for last week. ¶¶" & $list
It sends an email.. then moves onto the next supervisor. That seems to work well for me.
List ( $list ; Employees::c_Full NameFIRST & " - " & emp_TIMESHEETS::s_TotalHours )
also works. I'd put it in a set variable script step and not use Let for this purpose, but that's pretty much a preference issue rather than one approach being better than the other.