---
title: Why are some time slots not available for a Lesson
description: The system will mark some timeframes light grey if there is already a lesson happening at the same time and at the same location
---

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# Why are some time slots not available for a Lesson

## The system will mark some timeframes light grey if there is already a lesson happening at the same time and at the same location

If you notice certain time slots are unavailable (greyed out) when scheduling a lesson, it could be due to existing class at the same time and location.

The system highlights timeframes in light grey if another lesson is already scheduled at the same venue, room, and time.

To address this, you may need to adjust the time or location for one of the conflicting lessons.

Edit Existing Lessons:

1. Click `<` to the right of `Classes`.
2. In the expanded menu click `View All`.
3. Select the season and locate the class. Open the class detail page by selecting it.
4. Adjust as necessary: 
     1. In the *Basic Information* tab, click `Edit` to change the venue if necessary. 
     2. If not, head over to the `Lesson Setup` tab, select the lesson, then choose a different room and/or time.
5. Remember to `Save` your changes.

Ensuring the time slots are available for your lessons is essential for effective scheduling. By understanding why certain slots may be unavailable and know how to resolve conflicts, you can streamline your class management process and provide a better experience for both students and staff. If you encounter any difficulties or have further questions, don't hesitate to reach out for assistance. 🙌

Is the time slot not visible at all? It might be the time slot falls outside the opening or closing hours of the selected venue. Learn how to update the venue's operating hours [here](https://help.classmanager.com/en/why-are-some-time-slots-not-visible-for-a-lesson-class-manager-help-center?hsLang=en).

 

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