When installing the Centro web application, the Centro pipeline host service, and the Centro pipeline manager service, the installation wizards require ArangoDB user credentials to be entered to so the web app and services can connect to the database.
To change the credentials for a particular application
Go to the Configuration folder of the app in question. For example, c:\inetpub\wwwroot\Centro\Configuration.
Find the file, connectionSettingsTemplate.config.
Copy and replace the <connectionStrings> section into the connectionSettings.config file.
Edit the credentials to adjust the username and password.