Welcome to the QuickBooks Community, @saurabh-novasatu.

Based on your description of the issue above, it seems that you wanted to know how to effectively manage your multiple food processing branches in India. With this, I'm here to provide solutions and steps you need to take care of the said matter. This way, you'll be able to keep track of your transactions and monitor the growth of your businesses accordingly.

If your other branches have their tax IDs, you'll have to sign up for an additional QuickBooks Online (QBO) account. This is because the system will only allow one company per subscription. Since you already have an existing account, you can use the same login credentials when signing up to easily switch between your branches. Here's how:

1. Go to the QuickBooks pricing page.
2. Select the subscription you want.
3. If you recently signed in to QuickBooks, you’ll see a page asking you to confirm the account you want to sign in under. If it’s the account you want to manage the new company with, select Yes, that’s correct.
4. If you haven’t signed in recently, you’ll see a page that asks you to create an Intuit account. Select Add another company, then enter the same ID and password you already have.
5. Fill out all the information to complete the process.

After adding a new QBO account, you'll be able to start creating your sales and expense transactions. Then, you can monitor them by pulling a financial report. For the detailed steps, you can refer to this article: Run reports in QuickBooks Online. It also contains related articles in the Do more with reports section to get the information you need.

On the other hand, if your other branches share the same tax ID with the main business, you can use the location and class tracking feature. This feature lets you categorise data from multiple locations, offices, regions, outlets, or departments of the same company. You can also see all the payments for one location and deposit them as a group. 

To use the location tracking feature in QBO, you'll have to turn it on through the Account and Settings page. Here's how:

1. Go to the Gear icon.
2. Select Account and settings.
3. Go to the Advanced menu.
4. Click anywhere in the Categories section to open its contents.
5. Toggle the Track locations on.
6. Select Save, then Done.

Once done, you can add the location of the branch you want to track. For the detailed steps, you can refer to this article's Add a location section: Set up and use location tracking. It also contains details about editing or deleting a location.

Additionally, you can monitor the data for a specific branch. Just pull up a balance sheet or a Profit and Loss report by class or location. For the detailed guide, kindly check out this article: Run a financial report by class or location.

Please let me know if you have other concerns. I'm just around to help. Take care always.