To make your lives uncomplicated (and your clients lives easier), you can now checkout and accept payments for a dependant. Say your client has an appointment for his daughter, but you only have an account for the dad (with a saved credit card). Simply add a dependent to their account directly from the invoice page. Once on the invoice page, you will see a pen icon besides the client’s photo and their preliminary details (refer to photo) Click on the pen icon and select “Add a New Dependant”: 

Enter the dependent’s name and birthdate, press save. You should now be able to search for their appointments to collect payment under one account, instantly!