The components installed and the methods used to start jobs depend on the architecture that is being installed:
remote execution
A JobScheduler Agent without its own configuration is installed. Processes on this agent are remotely controlled by another JobScheduler.
Jobs are sent to the client according to their planned starting times.
See also external job processing with agents in the JobScheduler documentation.
remote configuration
A complete JobScheduler is installed, which then receives its configuration from a remote JobScheduler supervisor.
The configurations of all the remotely configured JobSchedulers in a network are centrally administered by a so-called Supervisor and which distributes the configurations to the remotely configured "workload" JobSchedulers.
If the Supervisor is temporarily not available, the Workload JobSchedulers will continue to work using their old configurations.
See also: How does a supervisor scheduler distribute the 'central configuration directory'?
SSH execution
It is not necessary to install an additional JobSchedulers on a client:
Jobs (scripts) are started from the server per SSH.
See also: What is the difference between SSH-Job execution and remote JS-Agents?