By adding it to the Price Tables for your Event. Follow these steps:
1. Go to the Events page and select your Event
2. Go to the Prices tab and click Manage on your Price Table
3. Click Duplicate As Draft
4. Click the Discount Mode toggle and then Assign Discounts
5. From the pop-up, select your discount from dropdown and which Variant(s) it applies to
6. Click Done and you'll see the discounted price per Band
7. To add Adjusters, right click on the Discount Variant and click Manage Adjusters
8. Want to override a Discount/Adjuster price for a Variant? Enter the new price for the discounted Variant per Band in the price cell
9. Click Save after you've made your changes.
NOTE - You must save any changes you've made before progressing. If you Review & Publish without saving, the changes will not be saved/published
10. Click Review and check details are correct
11. Happy? Click Publish & Make Active to update your prices with your Discount