The currencies set in your account determine what currency your opportunities and orders are shown in.
This article covers:
Master currency
This is the default currency with which your opportunity, sales, and reports are calculated with.
Currencies contain up to two decimals, 01.00
Multi-currency
With multi-currency activated, you can add more currencies in your opportunities, orders, and reports. These currencies have a currency rate that you can edit.
How to work with currency rate
When adding a new currency, the rate starts at 1. This means that one unit of the master currency is equal to one unit of the currency you are adding. Here's how to change this to reflect the actual exchange rate:
Example:
Let's say your master currency is SEK and you want to add EUR as a sub currency:
A Google search for SEK to EUR tells me that 1 EUR equals 10.44 SEK right now. This is the number you want to input in the sub currency's currency rate field for EUR.
How to change the currency rate
Admins can change the currency by clicking Settings → Account → Currencies: