I have two lists 'Projects' and 'Tasks' where 'Tasks' are associated with 'Projects' with a lookup column.
On the Projects list I would like to display the sum of all of the 'Actual Time' values (a column on the Tasks list) for Tasks that are associated with that Project.
Calculated columns only work within that list and lookups seem to just give me a drop down of values.
Is there any way to get this type of behaviour in SPS2010?