Multiple instances of the software (Panopticon Designer (Desktop) & Panopticon Server) can be deployed onto a single machine. Although only a single version can be installed through the standard installation process, the installed software can be copied and pasted to add another instance.
The common usage models for multiple instances are:
Multi-tenant deployments, providing separate Sand boxes for each tenant
Multi environments (Development, Test, Production)
In the case of regression testing multiple separate Panopticon Designer (Desktop) versions can be run in parallel, and configured to connect & publish to matching Panopticon Server instances.