# Writeback Matrix features

As mentioned in the [manual input columns](/working-with-inforiver/4.-adding-business-logic-and-formulae/insert-manual-input-columns.md) section, Inforiver Writeback Matrix provides additional features compared to Inforiver Reporting Matrix.

1. Data type - Person
2. Track changes at row level using the last updated at/by columns

{% hint style="info" %}
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Let's take a detailed look.

## 1. Person

In the Data Input dropdown, you can see an additional type called Person. Once a data input column is added in Inforiver Writeback Matrix, two columns – Last updated at and last updated by get enabled. These are covered in [track changes at the row level](#2.-track-changes-at-row-level).

<figure><img src="/files/sJrwl0ERVXSGxigN7S0v" alt=""><figcaption><p>Data input column type - Person</p></figcaption></figure>

a) Click on 'Person'. The person column side panel is shown in the below image.&#x20;

You can choose to [insert as a visual measure or column](https://docs.inforiver.com/working-with-inforiver/4.-adding-business-logic-and-formulae/insert-manual-input-columns/pages/ikgtokcJ0oes0aCiLKJA#1.-insert-as). Entry can be enabled or disabled in the total/subtotal rows using the '[Allow entry on total/subtotal rows](/working-with-inforiver/4.-adding-business-logic-and-formulae/insert-manual-input-columns/dropdown.md#iii-entry-in-total-subtotal-rows)' checkbox. Input access can be configured using the '[Allow input](https://docs.inforiver.com/working-with-inforiver/4.-adding-business-logic-and-formulae/insert-manual-input-columns/pages/ikgtokcJ0oes0aCiLKJA#2.-allow-input)' option.&#x20;

Click 'Create'.

<figure><img src="/files/UK6TOErfdCdK0vFroDBJ" alt=""><figcaption><p>Person column properties</p></figcaption></figure>

b) The person column gets inserted. Double-click on any of the cells. You can see a list of the users within the organization. Select any of the users.

<figure><img src="/files/WdAmtAVs69wUppnYbX07" alt=""><figcaption><p>List of users</p></figcaption></figure>

c) Start typing a name or scroll to find the desired user. Click on the username.

<figure><img src="/files/SQG0fuYj6Cf6PpnfBmOc" alt=""><figcaption><p>Selecting a username</p></figcaption></figure>

d) You can also select multiple users if required.

<figure><img src="/files/rFvjdURkCKOUiUw1tSkC" alt=""><figcaption><p>Selecting multiple users</p></figcaption></figure>

e) Click 'Enter' to save the data. You can see the user's name displayed as shown below.

<figure><img src="/files/7GPPBWnBnOqheo7QaIvU" alt=""><figcaption><p>Person name captured</p></figcaption></figure>

## 2. Last updated at/by&#x20;

You can track changes at the row level using the two columns – 'Last updated at' and 'Last updated by' which capture metadata for changes in the data input columns.&#x20;

These are enabled once you add a data input column and can be found in the data input dropdown. Select/deselect to show/hide columns. They can also be enabled/disabled from the ‘Manage columns’ dropdown.

<figure><img src="/files/ipXAU1zp7rLLW7F4TFBr" alt=""><figcaption><p>Last updated at/by columns</p></figcaption></figure>

In the next section, we'll be covering [quick formulas](/working-with-inforiver/4.-adding-business-logic-and-formulae/quick-formula.md).


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