---
title: "Pre-Populate Related Events"
slug: "pre-populate-related-events"
status: "new"
updated: 2026-07-21T20:26:20Z
published: 2026-07-21T20:26:20Z
canonical: "knowledge.technolutions.net/pre-populate-related-events"
stale: true
---

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

# Pre-Populate Related Events

Use custom JavaScript to automatically select one or more options in a Related Event Widget. This setup is useful when an event registration should include required sessions, such as check-in, a welcome session, or a required meeting time.

> [!WARNING]
> 📝 Note
> 
> This article uses custom JavaScript. Test the behavior in a test environment before using it on a live event registration form.

> [!TIP]
> ⭐ Get Inspired
> 
> This article was adapted from [a post by Technolutions staff](https://community.technolutions.net/get-inspired/post/auto-select-events-on-related-event-widgets-W25DrxfOXxoFXOS) in the Slate Community Forums' Get Inspired space. Have a great idea for a Get Inspired post? [Let us know](https://community.technolutions.net/get-inspired/new?post_type=gnHx7As1gZ8r6Ld)!

## Configure the required related events

1. Create or identify the related events that should be selected automatically.
2. Place those related events in a separate folder when you want to keep required sessions separate from optional sessions.
3. Add a **Related Event Widget** to the event registration form.
4. Configure the widget to display the required-event folder.
5. Set a clear export key, such as `relatedevent1`.

![Related Event Widget configured with export key relatedevent1 and a selected event folder](https://cdn.us.document360.io/cd8ea7a6-07f3-4846-a554-627ac016d3e3/Images/Documentation/01-cqgNuYRDEisWjPAXthxuq.webp)

## Add the auto-select script

1. From the event, select **Edit Scripts/Styles**.
2. Add the script that matches the selection behavior you need.

### Select one option

The following script selects the second option in the widget. JavaScript indexes start at `0`, so `[1]` selects the second input.

```JavaScript
$('[data-export="relatedevent1"] input')[1].click();
```

![Event registration form with a related event option automatically selected](https://cdn.us.document360.io/cd8ea7a6-07f3-4846-a554-627ac016d3e3/Images/Documentation/02-xLqhwOkEDgAp2eNyqxrMs.webp)

### Select multiple options

Repeat the input selection line for each option that should be selected.

```JavaScript
$('[data-export="relatedevent1"] input')[1].click();
$('[data-export="relatedevent1"] input')[3].click();
```

![Related Event Widget with multiple event options selected](https://cdn.us.document360.io/cd8ea7a6-07f3-4846-a554-627ac016d3e3/Images/Documentation/03-r828IpcJp8GU2mSNUS5N6.webp)

### Select the first two options when available

```JavaScript
var inputs = $('[data-export="relatedevent1"] input');
if (inputs.length >= 2) {
    $(inputs[0]).click();
    $(inputs[1]).click();
}
```

### Select all options

```JavaScript
$('[data-export="relatedevent1"] input').each(function(index, element) {
    $(element).click();
});
```

## Considerations

- Use checkboxes when more than one related event can be selected. Option buttons allow only one selection.
- If the required related events should not be visible, hide the required-event widget after confirming that the script works.
- Registrant limits for required related events should not be lower than the registrant limit for the main event.

For more information, see [Related Events](https://knowledge.technolutions.net/docs/related-events).