How does Spend Authorization encumber and release fund?

Summary:

How does Spend Authorization encumber and release fund?

Content (please ensure you mask any confidential information):

I was reviewing Oracle documentation on how Budgetary Control and Spend Authorizations work together and understand that "When an employee submits a spend authorization for approval, Budgetary Control evaluates whether funds are available for the anticipated expenses for a specific business unit, ledger, and budget date."

1. Are there instructions on how to go about checking how the fund was encumbered? We already set up Spend Authorizations with Budgetary Control but not sure how to view the encumbered funds?

Additionally I saw that there is no option for "Encumbrance Accounting for Spend Authorization" transactions, similar to that option of purchase requisitions and Procurement.