Hi unsurebookkeeper,
For the GST payment showing on the For Review tab, you can allocate it to an ATO Clearing account. The ATO Clearing account is where the amount payable or refunded from the ATO will be posted when once you lodge your BAS or IAS using the GST function in QuickBooks Online.
If you have lodged your BAS on a specific period, you'll need to record the payment first on the GST tab so you can match it to the payment in the For Review tab. Simply select Record payment on the lodged BAS and enter details needed.
Please see links below for details on categorising a tax payment:
Recording a GST payment (BAS Payment)
Reporting PAYG Instalments on BAS and IAS
Feel free to drop a comment below if you have any other questions. Have a nice day!