See this article for general instructions on how to apply adjustments to your forecast.This article will explain how percent adjustments are applied to and calculated with your forecast.
Once you have opened the adjustment pop up window, please select Create Percent Adjustment on the right hand side of the pop up box. Here, you will be able to select what day will the adjustment be applied to, the times it will affect and the percentage it will increase or decrease your sales.
In the example below, I'm expecting a 25% increase in sales on Friday night beween 6: 00 PM and 11:45 PM due to a Willy Nelson Concert.
Note: It's important to use unique names for the adjustments as they cannot be names as previous adjustments. Additionally, the times must be adjusted accordingly to get an accurrate adjustment.
Once you select Save, you will need to check the box next to the adjustment just created and select Apply Adjustment at the bottom of the pop up screen.
After this, what the forecasting tool will do is apply a 25% increase in sales on each 15 or 30 minute interval (depending on how your site is set up). For example, if prior to the adjustment you had:
7:00 PM - $100.00
7:30 PM - $85.00
8:00 PM - $60.00
8:15 PM - $78.00
Affter applying the adjusment, these sales per interval will be increased by 25%:
7:00 PM - $125.00
7:30 PM - $106.250
8:15 PM - $97.5
Once satisfied with the results, go ahead and select Save Forecast to save your work. If you have any further questions, please feel free to contact Customer Care.