> For the complete documentation index, see [llms.txt](https://docs.spike.sh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.spike.sh/oncall-schedules/override-an-on-call.md).
# Override an on-call
On-call overrides assign temporary, one-time shift coverage for a member without changing the underlying schedule.
Overrides are one-time, non-recurring adjustments. Use them when someone needs short-term coverage without altering the schedule itself.
## Adding an override
From your [on-call schedule](https://app.spike.sh/on-calls), press `O` or click **Override**. Add the team member's name, start and end time, and an optional comment for context. Save to apply.
There are two ways to use overrides:
{% tabs %}
{% tab title="Cover a user's shift" %}
The override replaces a specific member's on-call time. In the example below, Chen Taylor covers Maya Khan's shift from June 18th, 2026 (9:00 AM) to June 19, 2026 (9:00 AM).
{% endtab %}
{% tab title="Cover everyone's shift" %}
The override takes over all on-call responsibilities for the selected time window. In the example below, James covers everyone's shifts from June 22nd, 2026 (9:00 AM) to June 29th, 2026 (9:00 AM).
{% endtab %}
{% endtabs %}
## FAQs
### Can I add multiple overrides for the same time period?
Yes. If overrides overlap, the most recently added override takes precedence.
### Can I override the schedule for multiple team members at once?
No. Each override covers one user. Add separate overrides for each member you want to cover.
### Are notifications sent when an override is added or removed?
Yes. Team members involved in the override receive notifications about the change.
### Who can add or remove overrides?
Anyone without a Viewer role can add and delete overrides. This permission is fixed and cannot be customized.
