Availability Control - Budget control at multiple levels
I have a requirement to setup Availability control so that Budget control takes place at the top-level WBS Element i.e.
lower-level WBS Elements are allowed to exceed their budget but the totals must not exceed the budget at the top level
WBS A (level 1) -> Budget $10,000
WBS B1 (level 2) -> Budget $5,000
WBS B2 (level 2) -> Budget $2,000
Now with Availability control, assuming WBS B2 spends $2500 (and maybe gets a warning), then WBS B1 can spend up to $7500 without any problems.
WBS B1 only gets an error when spending reaches $7,501.
Is this possible with availability control?
I am aware of deactivating AVAC at the lower level, but this does not mean the system monitors the extra expenditures incurred by the lower-level elements at the top-level WBS.
Right now as things stand, WBS A thinks it still has $3000 available even though lower-level WBS might have exceeded their allotments.
Any ideas would be greatly appreciated