> For the complete documentation index, see [llms.txt](https://docs.dataloy.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.dataloy.com/release-8.31/voyage-management-system/step-by-step-guides/operations/laytime-calculations/maintain-laytime-calculation/panel-fields.md).

# Drawer Fields

Laytime Calculation Drawer Fields

The top section of the overview tab contains key information about a laytime.

<figure><img src="https://content.gitbook.com/content/zjy4yJFZRJooU1EGrLs5/blobs/wTCbD1imusIJ0qq6kThL/image.png" alt=""><figcaption></figcaption></figure>

The next section contains the following fields that can be edited.&#x20;

| Fields                | Description                                           |
| --------------------- | ----------------------------------------------------- |
| Aggregation           | Type of aggregation                                   |
| Demurrage Rate        | Rate of demurrage                                     |
| Despatch Rate         | Rate of despatch                                      |
| Currency              | The currency of the laytime calculation               |
| Fixed Demurrage       | Fixed demurrage for the laytime calculation           |
| Fixed Despatch        | Fixed despatch for the laytime calculation            |
| Responsible Charterer | The responsible charterer for the laytime calculation |

{% hint style="info" %}
An aggregation can be the following types:

* Averaged
* Reversible
* Non-reversible
  {% endhint %}

<figure><img src="https://content.gitbook.com/content/zjy4yJFZRJooU1EGrLs5/blobs/ZiIFuMzqCXdnfBlYuH1W/image.png" alt=""><figcaption></figcaption></figure>

A laytime calculation panel also contains a section for managing cargo ports:

{% content-ref url="/pages/-MWx2rIMSQGvKIQyy4pi" %}
[Manage Cargo Ports](/release-8.31/voyage-management-system/step-by-step-guides/operations/laytime-calculations/maintain-laytime-calculation/manage-cargo-ports.md)
{% endcontent-ref %}


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