Both types of licenses allow multiple users to access the same database and do not limit the number of user names and passwords you can add to a database.
Dedicated licenses cost less, but are less flexible.
TestTrack Pro floating and Web licenses are valid for use on a single server. TestTrack Pro dedicated client licenses can be used to connect to multiple TestTrack Pro servers. There is no 'server' license required and no charge for a maintenance contract. For larger teams, Seapine's per-server pricing is the most cost effective way to deploy your problem tracking solution. If you purchase 5 dedicated licenses, you can only install TestTrack on 5 computers.