To change the currency of the estimated value of the opportunity you need to open the opportunity list.
Step 1: Open the opportunity list
Open the opportunity list and switch to the grid view.
Step 2: Click on the heading of the value column
Click on the heading of the value column and choose the edit field option from the list.
Step 3: Choose the currency from the list
Choose the currency from the list and click save.
Notice: Our system only change the symbol of the currency next to the estimated value, but do not take into consideration the conversions of currencies.