In the attached video it is shown how an SQL Server Express is being installed separately from the Microsoft website https://www.microsoft.com/en-us/sql-server/sql-server-downloads and afterwards NaviEdit. NaviEdit full installer is used for creating the demo NaviEdit database. If you already have a desired database you can use the minimal installer or select the option Do not create a database.
Before installing the NaviEdit, certain settings must be done in the SQL Server Configuration Manager and ODBC.