> For the complete documentation index, see [llms.txt](https://docs.ohmautomation.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ohmautomation.io/en/android/guide/set-operation.md).

# Set Operation

The first step is to choose the item on which the operation will be performed.

<div align="left"><img src="/files/4k452iqonDDUlhkZyDBw" alt="" width="300"></div>

Once the item is defined, you can click the **Choose Function** button and select the operation to execute.

{% hint style="info" %}
If you wish to perform the operation with a delay, you can set a timer. This configuration is very useful if other operations have been set up. For example, if you want a light to stay on for 30 seconds, you can configure a first operation to turn on the light, and a second operation to turn it off after a 30-second delay.
{% endhint %}