Enable and configure the currencies that you would like to use

currencies as $curr): $c++; ?>
_currency[$curr]['exchange_rate'])?'checked':'';?> /> _currency[$curr]['exchange_rate'])?'disabled':'';?> name="[exchange_rate]" class="form-control" min="0.01" step=any value="_currency[$curr]['exchange_rate'])?$this->_currency[$curr]['exchange_rate']:'1.00';?>" placeholder="0.00 Rate" required title="Exchange Rate" /> = 1 USD

currencies)/4))):?>