# Customize File Manager externals

Several aspects of File Manager externals such as color patterns, error messages and metadata attributes can be controlled server-side by editing a JSON configuration file named **configuration-wui.json** located here:

```shell
<install_dir>/wlp/usr/servers/<steng>/web/static/config
```

{% hint style="info" %}
The name of the STENG directory depends on the number of STENGs installed. E.g. steng00, steng01, etc.
{% endhint %}

A reference **configuration-wui.json.sample** file is part of the package. It is stored at the same path as the configuration-wui.json: `<install_dir>/wlp/usr/servers/<steng>/web/static/config`.\
This file contains the latest update to the file structure and can be used as reference. It is suggested not to delete it.

In the following sections you will find:

* the default file
* how to customize the File Manager Login window with your company logo
* how to customize a footer in the Login window and in the main page
* how to configure metadata to be specified when uploading files