For certain use-cases and Automations, users want control over when they want to execute their workflow. The Manual Trigger allows you to start automation for a single run.
This is useful for when you have automated processes which only need to be kicked off exactly when you say - i.e. they are not scheduled, nor are they dependent on receiving input from other services. The Manual Trigger is also very useful for setting up test workflows. Another use case, might be pulling up performance reports or sales reports from your CRM or HR systems.
Execute a manual processing of a payment you receive from a telephone order