Hi there, amy-speed.
Welcome to the Community. If your client’s businesses submit the VAT as separate entities, they have to add another subscription.
This way, transactions for each company are properly reported to the HMRC. You can visit this link to view the features and comparison for each version: Small Business.
Simply tap the Buy now button to purchase and then follow the instructions to complete the process.
However, if they’ll report the tax as one company, the Location and Class Tracking features will show a clear picture of each segment’s financial health. For an overview on how the functionalities can help categorise the data and tracks the profitability by business, see the following links below:
Stay in touch if you have any clarifications or concerns. I’m here to help and make sure you’re taken care of. Have a great rest of the day.