Since a lot of fields do not show any subtotals (SUM) if they are "grouped by" i would like to know how i can/should set the store=true parameter for existing fields of OpenERP?!?
eg. for the field:
Modell: hr_timesheet_sheet.sheet
Field: total_timesheet
(If i group the treeview of timesheets to validate by Employees i can not see the subtotals of total_timesheet in the treeview by employee.)