...
The standard Continua installer also includes the agent installer. With the default free licenselicence, Continua comes with 1 agent which must be installed locally on the Continua Server. Note that with the default free licenselicence, only one build can be executed at any one time. Additional licenses licences must be purchased before concurrent builds are enabled.
...
Note that concurrent stages can only be used once Continua CI has been licensed and concurrent builds have been enabled. If you are running the free edition of Continua then the local agent can only ever run 1 build at a time. Also, the number of concurrent builds as defined by your license licence takes precedence over an agent's concurrent stages. For example, if your license licence grants you 5 concurrent builds then each agent will be automatically capped at 5 concurrent stages. Note that your concurrent builds, as specified by your licenselicence, cap the total number of builds running across all agents at any one time. So given that your license licence grants you 5 concurrent builds and you have 2 agents, both with their concurrent stages set to 5, you will never be able to run more than 5 builds at any one time between both agents, regardless of the agent's concurrent stages limit.
...