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Go to POS, when the item with promotion is added from the Menu it displays Promotion Tag with the Promotion Price as shown in below Pic
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DineConnect has the option to increase the price of the Item whenever the time gets increased by minute in the Timer Promotion and here is the setting for it
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If the Minute Price is enabled, it asks for how much we set for each minute and also timing you want to increase the price to
If you set Reset to Base Value, after the time mentioned in the Date Range, it will be back to normal price after that.