# Page Not Found

The URL `hc/en-us/articles/360061555192-Inviting-Live-Mission-Observers-and-Guests` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Tree testing questions](https://help.dscout.com/study-basics/question-types/activity-questions/tree-testing-questions.md)
- [Skip logic in usability tests, media surveys, and intercept studies](https://help.dscout.com/study-basics/design-a-study/skip-logic-in-usability-tests-media-surveys-and-intercept-studies.md)
- [Optional pre launch review for screeners and studies](https://help.dscout.com/study-basics/design-a-study/optional-pre-launch-review-for-screeners-and-studies.md)
- [Invite observers and guests to an interview session](https://help.dscout.com/interview-studies/manage-an-interview-study/invite-observers-and-guests-to-an-interview-session.md)
- [Using question quotas](https://help.dscout.com/study-basics/question-types/question-settings-and-organization/using-question-quotas.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://help.dscout.com/study-basics/question-types/activity-questions/tree-testing-questions.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://help.dscout.com/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://help.dscout.com/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/study-basics/question-types/activity-questions/tree-testing-questions.md`).

You may also use `Accept: text/markdown` header for content negotiation.