1. Navigate to "Reservations" from the main menu on the left
  2. Click on the blue reservation number
  3. Click "Edit" in the upper right hand corner
  4. Scroll down to "Add-ons & Fees", click "Add a new item"
  5. Fill out the fields
  6. Select either a set amount or discount by a percentage
  7. Input the the number, make sure it is a negative value
  8. Scroll down and click "Save Changes"

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