Cannot add exchange rate

I cannot add exchange rate, you may check the problem as my screenshot below:

I can’t see the field for me to input the exchange rate.

can anyone help?

If you are on cloud. That is enabling exchange rate. Now you can set the currency under the supplier or customer.

I mean I wanna set the exchange rates, not currency. here you will find the exchange rate:

setting > exchange rates

my problem is Manager did not allow me to set the exchange rate

It’s not very obvious but the reason no currencies are shown is because you are not using any currencies (all your accounts are denominated in the base currency). Manager will allow you to set exchange rates only for currencies that are actually in use.

So you need to first set some bank account, customer, supplier or general ledger account to be in foreign currency.