How to change currency on an opportunity in Oracle B2B - Sales

Summary:

Is there a way for me to add other currencies on an opportunity for the OOTB CurrencyCode field? I do not need to do any type of conversions or exchanges. We have a US team and a Europe team. When they add an opportunity, I just want them to select the correct currency. I do not see any easy way to do this. I would rather not create a custom field unless that is the last option.

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