This is the 11593rd most frequent Russian word.
единовременного
"Однократного; происходящего или совершаемого за один раз."
In this sentence, 'единовременного' describes the nature of the funding, indicating that it is provided in a single installment rather than being recurring.
Для успешного завершения проекта необходимо получить единовременного финансирования.
To successfully complete the project, it's necessary to receive one-time funding.
Here, 'единовременного' qualifies 'allowance,' showing it is something granted only once, not repeatedly.
Выдача единовременного пособия была согласована с руководством.
The issuance of the one-time allowance was agreed upon with the management.
In this usage, 'единовременного' relates to performing an action once, emphasizing a single occurrence of the event described.