Start by heading over to your Settings tab and select Scheduling
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Set the number of bookings you will accept per day, as well as how long you'd like each booking to be.
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Adjust the amount the number of hours beforehand that a client can book a session and how far out in advance.
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Give yourself a good amount of time before and after a session to avoid an overwhelming day or overlapped bookings.
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Hit Save and you're all set!