You can use Book That In's inbuilt Charge/Refund functionality to allow your customers to pay a deposit, or to split payments into to two or more instalments.
Step 1:
Give the customer the option to booking the whole term or event at a discounted rate. You can do this by creating a discount code for the required amount.
e.g. If you want to let your customers pay half now and half later, you would set up a 50% discount code.
Alternatively, you could add a Price Band equal to the reduced, deposit cost.
Step 2:
Collect the 2nd half of the payment when the time comes:
- Go to Business —> Group Overview
- Choose the class/event you want, and click on the Attendance Register icon (it looks like 3 little heads).
- Find the customer you wish to charge and click the blue arrow next to their name. Select 'Charge/Refund' from the options.
- Select 'Charge' from the first dropdown.
- Enter the amount the charge in the Amount field.
- Click the action button.
IMPORTANT NOTE
Before you take payment for the second instalment, you will want to contact your customer to let them know you will be charging their card for the remainder of the term on that specific date. Ideally you would also tell them this will happen when you give them the initial discount code.