Hi Pierre Lafrance,
Multi currency is a great tool to help track funds from all over the world and enter them into your QuickBooks Online account. I can help go over how multi currency works when using different bank accounts.
QuickBooks Online makes entering your foreign currencies easy by depositing them in accounts of the same currency or converting it to your home currency. With multi currency turned on you can make an account in QuickBooks Online that will allow you to select the currency the account uses. In order to create an account in your chart of accounts you can follow this article. Once the account is made it can be linked to one bank or credit card account. In order to link your account to the bank, you can follow the steps provided here. If you wish to have another bank account linked you'd need to create a second account in your chart of accounts to link it with.
Hope this was able to help!
