[Revised Jan 04]
It is a user choice whether GST content is displayed and allowed to be overridden at time of sale (for a duty free sale or a cheque fee etc), or whether the GST is hidden.
To Switch on/off GST display
From the RxOne Start Menu, Tools, Options. Click on the Switchboard tab. Tick/untick the box that says Show GST.
There will now be an extra column that shows the GST%.
To override the GST rate for a specific sale
Enter the GST column and alter as required, similar to a discount.
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