> For the complete documentation index, see [llms.txt](https://docs.tipo.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tipo.io/tipo-appointment-booking/settings/control-time-zone-for-bookings/lock-customers-timezone-selection.md).
# Lock customer's timezone selection
#### ✅ What this setting does
When **Lock customer’s time zone selection** is enabled, customers cannot change the time zone on the booking widget.
### ✅ How it works
When the setting is ON
* The widget shows only one time zone
* Customers cannot switch to another time zone
* All available time slots follow your business time zone
**Example:**
* Your store time zone: **Bangkok, Hanoi (GMT+07:00)**
* Customer is browsing from the US
⇒ The widget still shows times in **GMT+07:00**, and the customer cannot change it.
***
### 🛠️ Step-by-step: Enable this setting
1. Open the app > click **Settings** > **General**
2. In **Date time** > tick on the checkbox **Lock customer's timezone selection** to show 1 timezone on the booking widget only.
3. Click **Save.**
Result on the booking widget on the site.
***
### 💡 When should you enable this?
Enable this setting if:
* You offer in-person services
* Your team works in one time zone
* You don’t want customers to misread appointment times
Leave it disabled if:
* You offer online services
* Customers join from multiple countries
***
**🙋 Still need support?**
If you still need help, please feel free to contact us at . We’ll be happy to assist you further.
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://docs.tipo.io/tipo-appointment-booking/settings/control-time-zone-for-bookings/lock-customers-timezone-selection.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.