You can edit your calendar in Your cars > Calendar.
Click on the first and last half-days of the period you wish to edit, then select “Available” or “Unavailable”. If your availability follows a set pattern, you can use the “Recurrence” option. When someone books your car, it will be logged in the calendar automatically, so there is no need for you to enter it manually. If necessary, you can also indicate your availability more precisely through the "Daily Schedule", e.g. from Monday to Friday, 9am to 6pm, and Saturdays from 8pm.
We advise you to update your calendar as often as possible: it will prevent you from receiving pointless requests and needing to disappoint interested renters if your car is not available.
Tip: If it's complicated for you to anticipate your car availability, we recommend you to mark your calendar as "unavailable" by default, and make it available only when you're sure you can rent your car. Even if you indicate your availability last minute, you will still have chances to receive rental requests, especially before week ends or holidays!