---
title: Why are some time slots not visible when creating a new class
description: The system might not allow you to choose a timeframe for a lesson of your class if it is before opening or after closing times of a venue.
---

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# Why are some time slots not visible when creating a new class

## The system might not allow you to choose a timeframe for a lesson of your class if it is before opening or after closing times of a venue.

When setting up a new class, you may encounter instances where certain time slots are not available for selection. This can occur due to a couple of reasons.

Firstly, if the desired time slot falls outside of the opening or closing hours of the selected venue, the system will not allow you to choose it. The availability of time slots is restricted to the operating hours specified for each venue.

To update a venue's operating hours:

1. Click `<` to the right of `Settings`.
2. In the expanded menu click `Venues`, then click `View All`.
3. Select the venue you want to edit.
4. Click the `Edit` button and update the opening and closing times as needed.
5. Remember to `Save` your changes.

Secondly, if you have already scheduled another lesson at the same venue, room, and time, the system will prevent you from selecting the overlapping time slot. In such cases, adjustments may be needed to avoid scheduling conflicts. You can learn how to modify lesson details in our guide here ➡️ [Why are some time slots not available for a Lesson](https://help.classmanager.com/_hcms/analytics/search/conversion?redirect=aHR0cHM6Ly9oZWxwLmNsYXNzbWFuYWdlci5jb20vZW4vd2h5LWFyZS1zb21lLXRpbWUtc2xvdHMtbm90LWF2YWlsYWJsZS1mb3ItYS1sZXNzb24tY2xhc3MtbWFuYWdlci1oZWxwLWNlbnRlcg%3D%3D&ct=SEARCH&pid=139761362&cid=78989941726&t=dGltZSBzbG90cw%3D%3D&d=help.classmanager.com&c=5&rp=1&ab=false&opcid=&rs=UNKNOWN&hs-expires=1745473419&hs-version=1&hs-signature=AFXLFJ2dku_pkvVRq67D6SWpVLcTpfgMFA&hsLang=en)

With these steps, you can ensure seamless scheduling and avoid conflicts when creating new classes. If you have any questions, feel free to contact our support team. We're here to help! 🌟

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