Put the current budget balance beside a purchase request for review.
Give finance reviewers budget context on purchase requests.
Your finance reviewer can see the current budget balance beside a purchase request, without hunting through a separate sheet.
Keep open purchase approvals current when finance revises a balance.
Your pending purchase requests show revised balances beside the amount requested, giving finance reviewers the latest sheet figure as they decide.
Keep budget balances current on requests awaiting approval.
Your reviewers can see a current budget balance beside pending purchases before deciding, with a fresh note when the figure changes.