Charges can be applied on a per-item or per transaction level, and are accessed via Other -> Transaction Event Types -> Charges.
Charges can be applied to the different Transaction Event Types. The most common being:
Per-Transaction Charges
These are applied for the whole transaction, and can be limited to only apply when a certain delivery option is present in the transaction.
Per-Sale Item Charges
These are applied each time the condition is met. The Transaction Condition is configured via Other -> Transaction Conditions. Per-Sale Item Charges can be a fixed amount per item, which can optionally be capped so it will only be applied a certain number of times in a transaction, or can be a percentage of the sale item value.
Inside Charge
When adding a Per-Sale Item charge against the Internet Sale transaction event type, you can optionally choose to hide the charge in the ticket price. This can only be applied if the sale item is a ticket. If a ticket has a charge that is hidden inside the ticket price, then online the ticket price will display as the ticket price + the charge amount.