Hi Grégoire,
Thanks so much for reaching out and for your interest in our products!
Depending on which plugins you are interested in, you do have the ability to use different currencies. With Community Events and Community Tickets, you can either allow users to select a currency to use with this or you can choose a currency for them with this handy extension.
With Events Tickets Plus, if you are using WooCommerce, you can only select one currency by default, but you can purchase an additional WooCommerce extension to help you with currency switching.
I hope this helps to clarify things for you. Please let me know if you have any other questions on this topic!
Thanks,
Jaime