Hi Sarah -
Since this base rate is typically set up at time of implementation, I don't believe that this is a setting that a system admin can change, it probably has to be done from the Cvent side. You'll want to check with Cvent Support or with your Customer Success Manager. Changing the base rate will change all the calculations with your other currencies since they will now all calculate off your new "default" base rate.
Just keep in mind that making a change like this could impact some of your historic reporting or historic budgets. You'll probably want to talk through what that might look like or the implications to your reporting, before you go ahead and make that change.
Hope this helps!
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Rebecca Yousif
Senior Administrator
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