# Manage Business Hours

Once you have set up global business hours for a time zone, you can revise the time groups within it as your schedule changes, or remove any you no longer need. Both tasks start from the same place in the portal.

:::note[What these terms mean]
The **PBX** (Private Branch Exchange) is the phone system that routes your calls. **Global business hours** are the open-hours schedule the whole system follows, defined separately for each time zone. A **time group** is one block of days and hours within that schedule (for example, Monday to Friday, 9:00 AM to 5:00 PM). Call routing rules read these hours to decide whether an incoming call arrives during open hours or after hours, so keeping them accurate keeps calls going to the right place.
:::

## Edit a time group

1. Sign in to the Cloud Voice portal and go to **Call Control > Business Hours and Holidays**, then select the time zone you want to work with.
2. On the **Business Hours** page, choose the time group you want to change and click the edit icon ![Edit](/images/pbx/edit.png).
3. Adjust the time settings as needed.
4. Click **Save**, then **Apply**.

:::caution
Your changes are not live until you click **Apply**. Because call routing decides "open" versus "after hours" from these times, editing a time group changes how calls are handled during those periods. Double-check the new times before applying so calls are not sent to the wrong destination.
:::

The global business hours for that time zone now reflect your changes.

## Delete a time group

:::tip
If the schedule change is only temporary, edit the time group instead of deleting it. Editing keeps any call routing that relies on the group intact, so you avoid having to rebuild it later.
:::

1. Sign in to the Cloud Voice portal and go to **Call Control > Business Hours and Holidays**, then select the time zone you want to work with.
2. On the **Business Hours** page, choose the time group you want to remove and click **Delete**.
3. When prompted, click **OK** to confirm.

:::danger
Deleting a time group is permanent and cannot be undone. If any routing rule depends on this group's schedule, those calls may be handled unexpectedly (for example, treated as after-hours) once it is gone. Confirm the group is unused before you delete it, and recreate it manually if you remove it by mistake.
:::

The time group is removed from the global business hours for that time zone.