Can Oracle HCM support bringing a calculated value into the delivered absence balance fields in UI

Summary:

Can Oracle HCM support bringing a calculated value into the delivered absence balance fields in UI

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My Client is looking to use Absence module in Oracle Cloud as an entry / approval tool for absence types that require putting in a request, going through approvals. Background is that about 60% of their global population currently do not have tool for employees to request absences (across 18 countries in EMEA). Their existing Payroll system will remain as their Absence master system, therefore, all absence calculation must be done in their Payroll system, and only integrate the balances from Payroll system to Oracle Cloud so that balance reporting could be done centrally from Oracle Cloud, and so that