After starting the BadgeBuilder® Visitor installer, select the "Visitor Database Installation Only" set up type. This set up type will allow you to install the BadgeBuilder® Visitor database on machine on the network that you have write access to. Typically this would be shared, networked location.
If the database already exists at that location you will be asked if you wish to over-write it with an initial database. If in doubt, select NO and you will be asked for a different location. Normally BadgeBuilder® Visitor will run on a network, using just one database.