# Drawer Fields

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

<figure><img src="https://content.gitbook.com/content/uZ9lzqgHX4JL1Df67xog/blobs/PTxV52f7fnPT2yAqfgNa/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/uZ9lzqgHX4JL1Df67xog/blobs/A6XP2NX6ZJinba1id2lS/image.png" alt=""><figcaption></figcaption></figure>

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

{% content-ref url="manage-cargo-ports" %}
[manage-cargo-ports](https://docs.dataloy.com/release-8.16/voyage-management-system/step-by-step-guides/operations/laytime-calculations/maintain-laytime-calculation/manage-cargo-ports)
{% endcontent-ref %}