Thanks for dropping by the Community, @usernikhil-bargale.
In QuickBooks Online (QBO), you can track multiple companies with our Location Tracking feature, providing you have only one GSTIN. Since you have a different GSTIN for the other one, you’ll need a separate subscription to accurately track your business.
For detailed instructions on how to subscribe, please refer to these steps:
If you want to learn more about setting up a new QBO company, please visit this article: Create or add another company in QuickBooks Online.
Reach out to me in the comment section below if you have additional questions or concerns. I'll be more than happy to help. Have a wonderful day!