How to choose currency while making entry of purchase bill?

How to choose currency while making entry of purchase bill?

Step 1 : Go to Settings > Currency
Step 2 : Enable Exchange Rate feed
Step 3 : Check whether the currency which you want is listed in the the list or not. If it is not listed, please add the new currency.

Step 4 : Go to Vendor (Supplier) under the purchase option
Step 5 : Select desired currency in vendor master
Step 6 : Make purchase bill entry
Step 7 : If you wish you can change the exchange rate. It is just above item section .