Allow me to share some information about how QuickBooks Online (QBO) handles Multicurrency.
QBO simply bases the currency of the country your business is physically located. Thus, the system shows India's currency since you’re using the India version of QBO.
Also, since you’ve turned on the multicurrency feature, you can now assign a foreign currency to your customers, suppliers and credit cards. For more information about how multicurrency works in QBO, check out these articles for reference: