# Operation & Administration
To make changes in the device configuration click the "Changes" button in the upper right corner of the web interface.
The "Applying global changes" window contains a table of parameters whose values have been changed by the user. If you want to undo one change, click the "Roll back" button near the entry. If you need to undo all changes, use the "Roll back" button at the bottom of the window. Changes will be saved to the device configuration by clicking the "Apply" button.
To apply the configuration safely, use the "Try" button. In this case, the previous configuration will be restored after 180 seconds automatically if changes will not be confirmed or test period extended by the administrator.
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# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://wiki.astrawireless.net/astra-wireless-documentation/technical-documentation/astra-quanta-technical-user-manual/operation-and-administration.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.