# Set appointment lead time for online bookings

> Control how much notice you need before an appointment and how far in advance clients can book online.

Source: https://support.caspen.com/online-booking/set-appointment-lead-time-for-online-bookings
Documentation index: https://support.caspen.com/llms.txt

## Overview

**Minimum lead time**

Choose the minimum amount of notice your business requires before a client can book online. You can allow no notice if you prefer.

Example: If it’s 12 pm and your min lead time is 3 hours, the earliest bookable time is 3 pm.

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**Maximum lead time**

Choose how far in advance clients are allowed to book from.

Example: If your max lead time is 3 months, clients can book any available time up to 3 months from today, but not beyond.

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## Set the minimum lead time

1. Go to **Settings** → **Online booking**.
2. Find **Min lead time** and choose the minimum notice period.

<figure><img src="https://support.caspen.com/files/xD5bQtGHUnIZI5Btaq65.webp" alt=""><figcaption></figcaption></figure>

3. Click **Save** (top-right of the page).

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## Set the maximum lead time (how far in advance clients can book)

1. Go to **Settings** → **Online booking**.
2. Find **Max lead time** and choose how far in advance clients can book.

<figure><img src="https://support.caspen.com/files/mtUyQSxYGMiI6z2AoOKF.webp" alt=""><figcaption></figcaption></figure>

3. Click **Save** (top-right of the page).


> **Info:**
>
> Note: You can adjust these settings at any time and the updates take effect immediately.