# System structure

Boomerang 3 has two hierarchies:

* **Organisation**: how you group objects for daily work and permissions.
* **Infrastructure**: the technical components that deliver readings and alarms.

### Organisation

Organisation is the administrative structure. It also drives what you can see, based on your rights.

Hierarchy:

* System Group <img src="https://3588014471-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEANwXRnuP0ug8971viyg%2Fuploads%2Fd7qGdS9NHxFeLEvDdgLV%2Fimage.png?alt=media&#x26;token=9bcad34c-8c93-4a3c-98dc-a59ed9713239" alt="" data-size="line">
* Division ![](https://3588014471-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEANwXRnuP0ug8971viyg%2Fuploads%2FgQoRFQGrjRwQnxmzgnmD%2Fimage.png?alt=media\&token=306141ef-36b8-4482-a06b-d796d9215ee3)
* Group and optional subgroup(s)

Top-level groups are called **root groups**. They use the green group icon <img src="https://3588014471-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEANwXRnuP0ug8971viyg%2Fuploads%2F47OBJyjHeQUZge7nerxK%2Fimage.png?alt=media&#x26;token=e9ee2158-8d5b-4794-a23a-d24498135635" alt="" data-size="line">.

Lower-level groups use the blue group icon <img src="https://3588014471-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEANwXRnuP0ug8971viyg%2Fuploads%2F810POMVHbjv4kqxOO8bw%2Fimage.png?alt=media&#x26;token=4963b45f-70fc-4e52-93d1-c3d6850ccedb" alt="" data-size="line">.

Access to organisation levels depends on your rights. For example, a normal user may only see groups and subgroups.

See also [Scope of view](https://help.boomerang3.com/boomerang-3-user-manual/common_elements/scope_of_view).

### Infrastructure

Infrastructure is the technical structure. It contains the hardware and software blocks that deliver measurements and dispatch alarms.

Examples include objects, gateways, measuring points, measuring ranges, and relay boxes.

Infrastructure is configured in the **Admin** menu (administrators only). See the [Admin manual](https://app.gitbook.com/o/vTf4HrtXl9bgDwvJVSxV/s/PTZRr97g6y1opAswEdao/).

### Objects

Groups and subgroups contain objects. Objects connect organisation and infrastructure.

Object types:

* Regular object <img src="https://3588014471-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEANwXRnuP0ug8971viyg%2Fuploads%2FDb6fB7Az7XYerm734JIr%2Fimage.png?alt=media&#x26;token=99a858ca-54e9-4f95-a761-b093dff9c4ef" alt="" data-size="line">: measurement points and control points.
* Transport object <img src="https://3588014471-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEANwXRnuP0ug8971viyg%2Fuploads%2FPmmMSeT81nyD2al1GAmQ%2Fimage.png?alt=media&#x26;token=51ea1fa0-7adc-47d8-8092-01922dd1c2b6" alt="" data-size="line">: transport points and control points.
* Functional object <img src="https://3588014471-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEANwXRnuP0ug8971viyg%2Fuploads%2FNghIqDOtvJSrzQXOvn0Q%2Fimage.png?alt=media&#x26;token=0298c450-1878-4418-9532-f99e5c5b0cdd" alt="" data-size="line">: control points only.
* Technical object <img src="https://3588014471-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEANwXRnuP0ug8971viyg%2Fuploads%2FCxxojPoOTf8gwi3WitfT%2Fimage.png?alt=media&#x26;token=9eb2f555-eb6d-4bbf-9f76-44d66a6b96b3" alt="" data-size="line">: technical measuring points (battery, radio level).

See [Object view](https://help.boomerang3.com/boomerang-3-user-manual/dashboard/object_view).

### Points

Objects have points assigned to them. These include measuring, transport, technical, and control points.

See [Point types](https://help.boomerang3.com/boomerang-3-user-manual/dashboard/object_view/point-types).

### How it appears on the Dashboard

Your administrator defines the structures. They reflect your organisation and the naming of measuring and control points.

The system structure is shown in the overview part of the Dashboard.

![](https://content.gitbook.com/content/EANwXRnuP0ug8971viyg/blobs/UDA0badILzsYfIO5sLpM/image27.png)

You only see levels you have access to. An administrator may see system groups. A standard user may only see lower-level groups.

Click the icon of an item to unfold the structure below.

In the example below the `S1` system contains 2 divisions, `S1D1` and `S1D2`. The `S1D1` division was unfolded, and it contains 2 root groups, `S1D1G1` and `S1D1G2`.

![](https://content.gitbook.com/content/EANwXRnuP0ug8971viyg/blobs/n2OZ8CxNGRkDLzRoAVZz/image28.png)

Click the group to unfold it. A group may contain subgroups and objects with their measuring points.

The `S1D1G1` group contains `S1D1O1` object, for which its first 3 MPs are shown below. The list of objects and sensors in this group is longer and the screenshot presents only the top part.

![](https://content.gitbook.com/content/EANwXRnuP0ug8971viyg/blobs/ulUovZ2U2qabAEBQEh1x/image29.png)

The S3 system contains 1 division, `S3 D1`. It contains 1 group, `S3D1 G1`, which has 2 subgroups, `S3D1G1G1` and `S3D1G1G2`. There is also `S3D1O3` object, which has no MPs.

![](https://content.gitbook.com/content/EANwXRnuP0ug8971viyg/blobs/nP5RFBkT3hVFzDhjGSZ4/image30.png)