Data Approvals that are by dollar amount

Hello, I am very new to this application. We use this service for ITS however, our organization would like to expand to the finance department for Contingency Capital expenditure approval and status. Currently, the first check before a manager approval is whether the department or employee has available funds in their budget. We look up and total all approved requests and compare the difference between the budget to the current request amount. If the new request is less than available spending funds it goes to manager for approval.

Is there a way to build in this request amount check to budget amount automation in Service desk plus? Any advice would be helpful.