Hello Dhivya,

I would like to inform you that to print an invoice in multiple currencies, you must first enable the desired currencies. To enable automatic conversion, you need to define the exchange rate, which will update automatically. Alternatively, you can manually enter the currency rate. and  When you create the invoice in a different currency, the invoice lines will display the currency selected, while the journal items will show only the company's default currency. This is the standard behavior. Once you print the invoice, it will display the total amount in both currencies.

For further details, check out this video link of the Runbot version 18.0+e:

https://drive.google.com/file/d/11feYAiDccjUklFN7_ugWmM968EOQQvgd/view?usp=sharing

I hope you find this information helpful.

Thank you and have a nice day

Standard is: Create the sales order and invoice in customer currency (set the currency in the price list).

The posting in accounting will be in your company currency. 

Configure automatic update on currency exchange rate.  I think it is set by default.

Hi Divya 

you'd require two different invoice templates created in Odoo for each currency. However, odoo online does not allow customisation. 

Thanks.