Why do I need to a Pro or Collaboration bundle for each machine when only an agent is installed?

Each machine involved in the synchronization needs a base license and a license for any used add-ons. The Pro bundle includes a SureSync base license and a Communications Agent license. The Collaboration bundle includes a SureSync base license, a Communications Agent license and a file locking license.

For example, if you're using the Communications Agent for Change Journal support and real-time monitoring, you would need 2 Pro Bundles which includes the base license and Communications Agent license for each machine.