How to set prices to change at a fixed date
1. Go to Settings > Activities.
2. Select an activity type.
3. Click on an activity to open up its details.
4. Scroll down to the pricing table and change the prices for each price band with new Start dates and End dates. However, you will need to make sure you have also set dates from the current date up until the date you want the change to occur in order to not affect existing pricing.
5. Click Update activity.
Note: You will need to click Update activity each time you add new dates in order to save them correctly.