Crontab Syntax & HTTP Trigger
Introduction: You can find a description of this phase in section Phase 1 (Introduction).
This is simply a combination of the options Crontab Syntax and Trigger/External call (whereby the profile can only be started by HTTP request and not by another profile). The respective settings are described there. So on the one hand, a cron job is defined for the profile, but it can also be triggered via HTTP.