Field selection for WBS elements / Multiple kinds
I have a question about the field selection for WBS elements.
Is it possible to have different kinds of field selections for WBS elements used in projects of varied nature.
For example, projects of one type (customer projects) needed to have the field "Billing Element" as an input field. But the project meant for say investments should have this field disabled.
I tried and realise that this is not achievable. can you please confirm if this is possible or not.
If not possible, is there any other way of handling this requirement.