In RSVP Pro you can set the default currency overall but for individual sessions you can choose a specific language. So - in other words you can set the English language sessions to £ and send the money to a specific Paypal account and for your German sessions charge in EUR and send the money to a different Paypal account.
BUT they would need to be different events - we don't support 2 currencies per event.
Having said this - if you use Virtuemart of HikaShop as a payment mechanism your customers can choose the currency which they would like to pay,
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