The rates tab displays information on foreign exchange conversions so that your projects have correct values based on their converted from and converted to values. You can access this page by selecting the rates tab, located on the navigation bar, located at the top of the page.
To create a new rate, simply click the 'New Rate' button. This will present you a dropdown menu which will allow you to select your Rate type.
Once you have selected a rate, you will be presented with an additional page. On this page you will be required to enter your Rate Name and your selected FX Rate, this will be applied to your chosen account upon creation.