In My Website > Section 11 - Reservations & Online Booking > Booking charges you are able to set the value of the deposit that you wish to take for your bookings.
There are two options available, a ‘Fixed Price’ or ‘Percentage of Value’
Fixed price deposit - this will be calculated as a simple fixed price deposit. For example, if you set your fixed price deposit to £50 and your property is booked for 2 weeks, the deposit will be £50 only.
Percentage of value - the will be calculated as the total cost of the booking * percentage of value. For example, if the percentage is set to 25%, 2 weeks at £1000 per week will be £2000 * 25% = £500