---
language: en
title: Creating the flow for double Opt-In
category: Flows
summary: Set up the double Opt-In flow in TuCalendi by assigning events that need a double booking confirmation from your customers.
---

# Creating the flow for double Opt-In

In TuCalendi we have developed the **double Opt-In flow** for cases where your customer needs to give a **double confirmation** of the reservation they have made.

**Creating the flow for the double Opt-In is very simple**, as you only need to assign to the flow the events that require double confirmation.

[Log in to your TuCalendi account](https://account.tucalendi.com/) with your username and password. In the side menu, click on **"Flows"**:

![Menu flows](https://www.tucalendi.com/images/content/flows/en/flow-menu-four-types.png)

In the **"Double Opt-In"** option, click on **"Select"**:

![Double Opt-In flow](https://www.tucalendi.com/images/content/flows/en/double-opt-in-flow.png)

> [!TIP]
> We have developed this flow so that you only need to choose the **events that require a double confirmation** of the booking.

Click on the **three vertical dots**:

![Creating a double Opt-In](https://www.tucalendi.com/images/content/flows/en/creating-double-opt-in-flow.png)

The menu with the Double Opt-In flow options will be displayed:

![Double Opt-In flow menu](https://www.tucalendi.com/images/content/flows/en/double-opt-in-flow-menu.png)

Click on **"Assign meeting types/events"** and the complete list of events you have created in your calendars will be displayed. You only need to select the events that need a double Opt-In confirmation and click on **"Save"**.

This **assigns the events** to the double Opt-In flow.

![Double Opt-In with events assigned](https://www.tucalendi.com/images/content/flows/en/double-opt-in-flow-with-event-assigned.png)

**For the double Opt-In process to be fully operational**, you must add the **double Opt-In link** in the [confirmation template](https://www.tucalendi.com/en/s/email-notifications/add-double-opt-in-link-in-confirmation-templates).

> [!CAUTION]
> **IMPORTANT:** If you assign an event with a double Opt-In procedure but the confirmation template does not contain a double Opt-In link, the client will not be able to confirm the appointment. The **booking will be automatically deleted after 2 hours** and the time slot will be released again.