GST On Import of Services from Supplier who is below the ATO threshold for levying GST

Under the ATO's GST rules, companies supplying goods and services to customers in Australia must add the GST to the invoice. When importing goods, the GST & Customs charges are levied by the freight provider (something which is covered in 

https://www.myob.com/au/support/myob-business/purchases/recording-overseas-purchases-and-import-costs?productview=Browser).

But if a supplier's annual sales to customers in Australia is less than the ATO threshold, they do not have to add the GST. The onus is then on the purchasor to set aside the GST amount and pay it with their BAS.

This situation particularly arises if you purchase software services from an overseas provider: there is no physical good, so no freight invoice/commercial invoice.

I was wondering whether anyone has worked out a way to handle this in MYOB.

I was hoping for something simple, but anticipate it is going to take several transactions: one to record the purchase; one to record the GST; one to pay for the purchase and another to allocate the GST to a holding account, which is cleared when the BAS is prepared