> ## Documentation Index
> Fetch the complete documentation index at: https://help.dingtalk.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Premium Steps

> Premium workflows provide multiple enhanced Steps, including Start, Manual, Automatic, Branch, Aggregation, CC, and End Steps. Each Step serves a specific purpose — such as supporting Custom approver rules, callbacks via third-party services, and conditional branching — to meet more complex business requirements.

Premium workflows offer several Steps that are not available in Basic workflows. Building on Basic workflows, they extend functionality and enable features such as Custom executor rules and Completion strategies. The following Steps are available:

| **Step name**                                | **Purpose**                                                                                                                                                                                                                                                                                 |
| -------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [**Start Step**](/yida/process/ek8q11)       | The initiating step in Premium workflow design. When a workflow starts, formula validation or Association actions may run alongside it. The step's Submit rules use formulas to validate whether a user can perform the action when submitting a workflow or when an approver processes it. |
| [**Manual Step**](/yida/process/ves9o4)      | Supports Custom approver rules based on your specific requirements.                                                                                                                                                                                                                         |
| [**Automatic Step**](/yida/process/ctns3l)   | Primarily used to invoke a callback through a third-party service. Register the third-party service first, then select it from the third-party service list.                                                                                                                                |
| [**Branch Step**](/yida/process/hhw27w)      | Premium workflows support Branch Step configuration. When the workflow reaches a Branch Step, the rules configured on the step determine which branch to take next, producing an if...then... conditional effect.                                                                           |
| [**Aggregation Step**](/yida/process/ee2mei) | Use an Aggregation Step when a workflow contains multiple parallel branches and all of them must complete before it can continue. The overall workflow only continues after every step on the incoming lines of the Aggregation Step finishes executing, creating a wait effect.            |
| [**CC Step**](/yida/process/ghkqiq)          | Use this step when, after an Approval process starts, the relevant users need to view or be notified of the Approval form without having to approve it.                                                                                                                                     |
| [**End Step**](/yida/process/gkmvl4)         | Marks the terminus of the entire workflow. A properly configured workflow should progress step by step and eventually reach this step, indicating that the workflow has ended.                                                                                                              |