Here you can set the time zone, date and time, as well as the base currency of your company.

It is worth noting that if the estimate of any project needs to be withdrawn in foreign monetary units (for example, if your customer is a resident of another country), then this will be done at the exchange rate of the base currency indicated here. Accordingly, the "Exchange rate" item in the "Printing" section of this project (you will see this item when you set the project currency in the "Printing" section) means the exchange rate of the monetary unit of the project in relation to the base currency of your company.