Please suggest Expense DFF structure for each expense type specific to a BU

Summary: we have requirement from client where they want some additional information whenever they select specific expense type while raising the expense report. please suggest me how can i design the structure should i go with global DFF or context specific. As far as i know we don't have any option to restrict the DFF to visible per BU ? if any other suggestion pls share

Content (required): we have requirement from client where they want some additional information whenever they select specific expense type while raising the expense report. please suggest me how can i design the structure should i go with global DFF or context specific. As far as i know we don't have any option to restrict the DFF to visible per BU ? if any other suggestion pls share c