Flows are a method of describing a sequence of stages. A stage represents a single verification or logic step. They are used to authenticate users, enroll them, and more.
Upon flow execution, a plan containing all stages is generated. This means that all attached policies are evaluated upon execution. This behaviour can be altered by enabling the **Re-evaluate Policies** option on the binding.
To determine which flow is linked, passbook searches all flows with the required designation and chooses the first instance the current user has access to.
This designates a flow for enrollment. This flow can contain any amount of verification stages, such as [**email**](stages/email/index.md) or [**captcha**](stages/captcha/index.md). At the end, to create the user, you can use the [**user_write**](stages/user_write.md) stage, which either updates the currently staged user, or if none exists, creates a new one.
This designates a flow for unenrollment. This flow can contain any amount of verification stages, such as [**email**](stages/email/index.md) or [**captcha**](stages/captcha/index.md). As a final stage, to delete the account, use the [**user_delete**](stages/user_delete.md) stage.
This designates a flow for recovery. This flow normally contains an [**identification**](stages/identification/index.md) stage to find the user. It can also contain any amount of verification stages, such as [**email**](stages/email/index.md) or [**captcha**](stages/captcha/index.md).
Afterwards, use the [**prompt**](stages/prompt/index.md) stage to ask the user for a new password and the [**user_write**](stages/user_write.md) stage to update the password.
This designates a flow for general setup. This designation doesn't have any constraints in what you can do. For example, by default this designation is used to configure Factors, like change a password and setup TOTP.
