Creatio's process designer works with BPMN 2.0, the international standard for process notation. That has two practical advantages. Your models can be read by anyone who knows the notation (including an external auditor or a new colleague), and you can exchange diagrams with other BPM systems instead of being stuck with a proprietary format.
More importantly, these models are executable. It is not a picture that a developer then has to rebuild; the diagram itself is the application logic. Tasks, approvals, decision points, waiting times, system actions and notifications are all elements in the same diagram.
Several people can also work on a process design at the same time, which works a lot better in a workshop setting than one person at the keyboard.