Single Currency Globally

Hello Team,

We have different events in different currencies.
What we have right now is if the event is in the US, the event price shows up in Dollar in the US and Pounds in the Netherlands, and Zar in South Africa.

What we want is if the event is in the US, it should show the price in Dollars all over the world, and if the price is in Pounds then it should be visible in pounds throughout the world.

While it shows the price rest all currency change options should be disabled.
If it is showing Dollars then the user should not be able to change the price in any other currency.

Can you please help me with the same

Thanks,
Suraj