Hi OWAIS,
I'm here to guide you on how to change the home currency.
Once you turn on Multi-currency, you can no longer recall it at a later time. However, you have the option to delete your data by purging the file or cancel the account and start all over again.
Afterward, turn on Multi-currency again and ensure to select your home currency.
I've also added this reference when processing foreign transactions. Just a heads up, this article is for the Singapore region, but the details are the same with the international one: Receiving and making payment for a foreign invoice/ bill with a foreign currency.
I'll be around if you have questions creating transactions for other currencies.
