On or after August 9, 2018, features within the 'Clients' tab of your account will no longer be accessible. Export your data, including Contracts, Invoices, and Questionnaires, in advance as it will no longer be available. You can continue to manage your Inquiries and Bookings within Messages.
SmartTasks are tasks assigned to specific products or services, and then triggered/added to a booking automatically when that specific product or service is added to a client contract.
A regular task is an independent task that you manually add to a booking.