> For the complete documentation index, see [llms.txt](https://support.docstudio.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.docstudio.com/user/envelope-processing-flow-template-configuration/processing-flow-role-types.md).

# Processing Flow Role Types

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* **Processing flow** — The rule set that determines recipient order and document processing behavior.
* **Role** — A participant type in a template or envelope flow, such as sender, signer, approver, or copy.

See the [Glossary](/glossary/glossary.md) for DocStudio term definitions.
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### Assignee role

* An **Assignee** fills in fields in the envelope and can sign a document when required.
* The **Assignee** role must have at least one field in a template document.
* The **Assignee** role must appear earlier in the flow than the **Signer** role.

### Signer role

* A **Signer** signs a document with an electronic signature.
* The **Signer** role must have at least one signature field in a template document.
* A **Signer** cannot have two signature fields in the same document.
* The **Signer** role must appear later in the flow than the **Assignee** role.

### Approver role

* An **Approver** can approve or reject moving the envelope to the next roles.
* The **Approver** role can be placed at any point in the processing flow, but not earlier than the **Sender**.

### CC role

* A **CC** role receives a copy of the envelope and cannot edit document fields.
* The **CC** role can be placed at any point in the processing flow, but not earlier than the **Sender**.