====== Add sectors and key points ======

**Sectors** and **key points** allow geographical markers
to be added directly along the distance axis.

They can be used to display, for example:

  * project sections
  * structures
  * work areas
  * crossings
  * geographical limits

These elements enrich the reading of the Time-Location schedule
by adding **geographical context to the project**.

{{:en:time_distance:2026-03-12_21h31_01.png?600|}}

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===== Add a sector line =====

In the **Distance axis** tab, click **+** to add
a new line.

Then select the **Sector** type.

A new line will appear in the list of distance lines.

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===== Choose the displayed value =====

The **Displayed value** field allows you to define
the information displayed along the distance axis.

For example:

  * the **sector name**
  * the **quantity**
  * a **description**

This allows the display to be adapted
to the project conventions.

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===== Configure the appearance =====

Several parameters allow you to adjust
the appearance of the sectors:

  * **Line height**
  * **Line colour**
  * **Text position**
  * **Text rotation**

These options help improve the readability
of the distance axis.

Two display modes are also available:

  * **Sector style**
  * **Common style**

The common style allows the same style
to be applied to multiple sectors.

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===== Select zones to display =====

The lower part of the window allows you to select
the **project zones** to display.

These zones are usually organised
in a hierarchical structure:

  * structures
  * sections
  * junctions
  * work areas

Each zone is defined by:

  * a **starting chainage (Pkd)**
  * an **ending chainage (Pkf)**

By checking the **Visible** column, the zone appears
directly in the Time-Location view.

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===== Add a new zone =====

It is possible to add new zones directly
from this interface using the button:

  * **+ Zone**

It is also possible to add a new **axis**
in order to organise zones by category.

These elements help structure the project
and enrich the reading of the Time-Location schedule.