The PAYG is payable monthly, however, at the end of the Quarter, eg September, rather than being due in October, it is due for payment with the BAS in November. The October PAYG is actually due on 21 Nov and September BAS on 28 Nov.
To set Cashflow for PAYG Monthly / BAS Quarterly:
Add a Custom Schedule in for the PAYG Accrual payments in
Cashflow Settings > Wages & PAYG >
Month in which payment is made, map for each individual month of payment:
July > August;
August > September
September > November
October > November
Cashflow Settings >GST:
This setting can use the preset months of payment: Feb, May, Aug, Nov.