> For the complete documentation index, see [llms.txt](https://support.caspen.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.caspen.com/using-caspen/online-booking/set-appointment-lead-time-for-online-bookings.md).

# Set appointment lead time for online bookings

## 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="/files/xD5bQtGHUnIZI5Btaq65" 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="/files/mtUyQSxYGMiI6z2AoOKF" alt=""><figcaption></figcaption></figure>

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

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