Every process requires at least one Start step. Start steps can have different names and descriptions. They are actually virtual and are proceeded automatically when the process instance has been started. They are automatically trigger actions on outgoing connectors and following steps (actions that have "before step" start type).

Start step is important if the first thing that need to be done is for the system to decide which step to do first based on conditions (as opposed to always executing the same step first regardless of conditions).

• When the first step after Start is a Manual / Decision / Automatic step without conditions, the Start step can be placed in any Responsibility lane.
• When the first step after Start is conditional (has conditional connectors), the Start step should be placed into lane of System Responsibility. This way, the first thing the system does is make a decision as to what the first step should be.
• When the first steps are executed in parallel (when Start step has more than one outgoing connectors). System will automatically make these connectors starting parallel branches.

Every process requires at least one End step. End steps can have different names and descriptions. They are actually virtual and are used to hold the last  connectors of the process.

This is a simple step without pre-defined properties. It has only one "Proceed" action available.

This is a simple step, the same as "Manual", but with System as a pre-defined assignee.

This is a step with two pre-defined actions, which will promote process further to one of two paths set by proper connectors. Correspondingly, this type of step has two actions available: "Approve" and "Reject". These actions are mutually exclusive, so, you are not available to do both of them at the same time.