# How to Block Out Times

## Overview

This tutorial shows how to use the [Avonni Date Time Picker](/flow/flow-components/date-time-picker.md) to display only *available* time slots, similar to Calendly, for appointment booking, scheduling demos, or any scenario where users select from available times. For example, if a meeting is booked for Monday at 10:00 AM, that time should be shown as unavailable in the date time picker, preventing double booking.

{% @arcade/embed flowId="aqKQUk4HvSMhiZQaBClW" url="<https://app.arcade.software/share/aqKQUk4HvSMhiZQaBClW>" %}


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