Can we make group of G/Ls(commitment item) in BCS

Dear All,

I want to know that can we make G/Ls group in BCS for tracking budget, in existing scenario we are tracking budget for service purchases.

We assigned budget for All G/L(commitment item) separately but there are so many G/L account exist  and user never give budget G/L level.

So can we create a group of G/Ls(commitment item) and assign budget on group level. But when user create a PR/PO the system should deduct budget from respective G/L which was already assigned at group level.

Regards,

Mukesh