The PREMIUM subscription for SaasAnt Transactions (Online) is a volume-based subscription plan which works best for accountants having multiple client companies. 

Subscribed users can add up to 100 QuickBooks Companies (30 client companies) at once. More on, adding multiple companies to the app. Now to associate the new QuickBooks company to the PREMIUM plan, each client QuickBooks company has to be added to the application with the same user id with which the PREMIUM subscription is purchased.

Each added QuickBooks company in turn can have up to 15 users. More on, adding new users.

You can IMPORT, EXPORT & DELETE transactions for each QuickBooks Company.