If you haven’t already done so, go to Settings > Distribution > Payments and set the appropriate currency and payment method (e.g., Paypal).
Use this page to set the amounts charged for various types of fees.
General Options: Check this to allow for payments to be collected.
Author Fees: Set the amount to charge for an article processing charge (APC).
Reader Fees: Use this to charge reader fees distinct from subscriptions.
General Fees: Use this to charge other fees, such as memberships.
