Hi
what I suggest you do is post a journal of the BAS transaction payment required as you normally would do
the total of the payment amount will then be posted to a liability account which you can create called ATO intergrated client account
Eg BAS gst col 5300 gst paid 3200 PAYG payable 8770 Total BAS = 10870. All should be N-T tax code ( all these accounts are liability accounts 2-xxxx)
gst collected DR 5300
gst paid CR 3200
payg payable DR 8770
ato client. CR 10870
totals. 14070. 1470
then when the payments are made you code them to the ato client account
hope this helps
Lisa