- Click System —> Product Item Maintenance Utility.
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- Click on the item you wish to put discount on.
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- Click the Tab: Price
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- On the bottom right dropdown box and change to: Enable Item Individual Price.
- Dropdown box in “Special Terms” and change to: Special Price Related with Special Terms.
- Then set the special price and promotion times in: Special Terms.
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- Click “save” to save the change.