# Maintain Market Indices and Market Index Values

## Overview tab

The overview tab gives you access to the details of the market index, as well as a list of spot and current forward-curve market index values. You can read more about the grid's functionalities [here](https://app.gitbook.com/o/-LhoT2vqihl0pYiCeolt/s/BOXrRRsrTBcdaVWqOIzi/voyage-management-system/step-by-step-guides/data-grids).

For regular market indices, there is the option to turn it into a [Protected Market Index](https://docs.dataloy.com/release-8.23/voyage-management-system/step-by-step-guides/chartering/market-indices/protected-market-indices), while a [Custom Market Index](https://docs.dataloy.com/release-8.23/voyage-management-system/step-by-step-guides/chartering/market-indices/custom-market-indices) will in its place have a lumpsum adjustment field.

The Last Updated field shows the date of when the most recently updated market index value was updated.

<figure><img src="https://4076879755-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FBOXrRRsrTBcdaVWqOIzi%2Fuploads%2FPWVctCOJvEx1vUTKmxZr%2FScreenshot%202026-02-12%20161538.png?alt=media&#x26;token=2d37c751-882a-4896-bfba-05b4ba9399d6" alt=""><figcaption></figcaption></figure>

## **Forward Curve tab**

This tab displays a list of all market index values for the index that are categorized as Historical Forward. Read more about the different types of market index values [here](https://docs.dataloy.com/release-8.23/voyage-management-system/step-by-step-guides/chartering/market-indices/market-index-value-types).

## Deleting a Market Index

A Market Index must first be *disabled*. Click the ![](https://content.gitbook.com/content/BOXrRRsrTBcdaVWqOIzi/blobs/can4XbnbeE9Ez1YsWgb9/more_vert-24px.svg) button in the top right corner to open the secondary actions. Choose the "Disable" option. Click the ![](https://content.gitbook.com/content/BOXrRRsrTBcdaVWqOIzi/blobs/can4XbnbeE9Ez1YsWgb9/more_vert-24px.svg) button again, and then choose the "Delete" option. A confirmation modal will also show up, click Delete.