Provisional and AIM reports from MYOB Business

I am a first time user with MYOB and  have an AIM arrangement with IRD. I am trying to follow the MYOB guides on how to complete my first GST and AIM return but th einstructions do not match the MYOB software I have. In the set up instructions for AIm it says:

"1. Go to the Accounting menu and choose GST and provisional tax. The GST and provisional tax page appears." 

In my version of MYOB there is no option for "GST and provisional tax" so I am stuck at step 1. Does anyone know why this option is not appearing in the drop down menu under Accounting?