Bill group definition for bulk expenditures

Hello folks,

As I understood, bill group functionality provides flexibility to generate multiple draft invoices for different transactions based on the bill group attribute associated with the expenditure items or events.

Bill group needs to be updated from expenditure inquiry form at individual expenditure level, which is not practical for a business which has good number of expenditures.

I observed that using Mass adjust, we can update bill group based on different criteria but that should be done manually.

Is there any way to update bill group for a group of expenditures/events automatically at project level??

Appreciate quick response.